mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-26 02:13:38 +08:00
2069 lines
61 KiB
C++
2069 lines
61 KiB
C++
/** \file complete.c Functions related to tab-completion.
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These functions are used for storing and retrieving tab-completion data, as well as for performing tab-completion.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <limits.h>
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#include <string.h>
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#include <wchar.h>
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#include <wctype.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <errno.h>
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#include <termios.h>
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#include <ctype.h>
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#include <pwd.h>
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#include <signal.h>
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#include <wchar.h>
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#include <pthread.h>
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#include <algorithm>
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#include "fallback.h"
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#include "util.h"
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#include "tokenizer.h"
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#include "wildcard.h"
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#include "proc.h"
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#include "parser.h"
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#include "function.h"
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#include "complete.h"
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#include "builtin.h"
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#include "env.h"
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#include "exec.h"
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#include "expand.h"
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#include "common.h"
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#include "reader.h"
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#include "history.h"
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#include "intern.h"
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#include "parse_util.h"
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#include "parser_keywords.h"
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#include "wutil.h"
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#include "path.h"
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/*
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Completion description strings, mostly for different types of files, such as sockets, block devices, etc.
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There are a few more completion description strings defined in
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expand.c. Maybe all completion description strings should be defined
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in the same file?
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*/
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/**
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Description for ~USER completion
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*/
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#define COMPLETE_USER_DESC _( L"Home for %ls" )
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/**
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Description for short variables. The value is concatenated to this description
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*/
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#define COMPLETE_VAR_DESC_VAL _( L"Variable: %ls" )
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/**
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The maximum number of commands on which to perform description
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lookup. The lookup process is quite time consuming, so this should
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be set to a pretty low number.
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*/
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#define MAX_CMD_DESC_LOOKUP 10
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/**
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Condition cache value returned from hashtable when this condition
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has not yet been tested. This value is NULL, so that when the hash
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table returns NULL, this wil be seen as an untested condition.
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*/
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#define CC_NOT_TESTED 0
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/**
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Condition cache value returned from hashtable when the condition is
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met. This can be any value, that is a valid pointer, and that is
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different from CC_NOT_TESTED and CC_FALSE.
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*/
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#define CC_TRUE L"true"
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/**
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Condition cache value returned from hashtable when the condition is
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not met. This can be any value, that is a valid pointer, and that
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is different from CC_NOT_TESTED and CC_TRUE.
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*/
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#define CC_FALSE L"false"
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/**
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The special cased translation macro for completions. The empty
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string needs to be special cased, since it can occur, and should
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not be translated. (Gettext returns the version information as the
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response)
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*/
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#ifdef USE_GETTEXT
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#define C_(wstr) ((wcscmp(wstr, L"")==0)?L"":wgettext(wstr))
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#else
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#define C_(string) (string)
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#endif
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/**
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The maximum amount of time that we're willing to spend doing
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username tilde completion. This special limit has been coded in
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because user lookup can be extremely slow in cases of a humongous
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LDAP database. (Google, I'm looking at you)
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*/
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#define MAX_USER_LOOKUP_TIME 0.2
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/**
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Struct describing a completion option entry.
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If short_opt and long_opt are both zero, the comp field must not be
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empty and contains a list of arguments to the command.
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If either short_opt or long_opt are non-zero, they specify a switch
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for the command. If \c comp is also not empty, it contains a list
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of non-switch arguments that may only follow directly after the
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specified switch.
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*/
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typedef struct complete_entry_opt
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{
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/** Short style option */
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wchar_t short_opt;
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/** Long style option */
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wcstring long_opt;
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/** Arguments to the option */
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wcstring comp;
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/** Description of the completion */
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wcstring desc;
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/** Condition under which to use the option */
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wcstring condition;
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/** Must be one of the values SHARED, NO_FILES, NO_COMMON,
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EXCLUSIVE, and determines how completions should be performed
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on the argument after the switch. */
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int result_mode;
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/** True if old style long options are used */
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int old_mode;
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/** Completion flags */
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complete_flags_t flags;
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const wchar_t *localized_desc() const
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{
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const wchar_t *tmp = desc.c_str();
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return C_(tmp);
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}
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} complete_entry_opt_t;
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/* Last value used in the order field of completion_entry_t */
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static unsigned int kCompleteOrder = 0;
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/**
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Struct describing a command completion
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*/
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typedef std::list<complete_entry_opt_t> option_list_t;
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class completion_entry_t
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{
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public:
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/** List of all options */
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option_list_t options;
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/** String containing all short option characters */
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wcstring short_opt_str;
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public:
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/** Command string */
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const wcstring cmd;
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/** True if command is a path */
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const bool cmd_is_path;
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/** True if no other options than the ones supplied are possible */
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bool authoritative;
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/** Order for when this completion was created. This aids in outputting completions sorted by time. */
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const unsigned int order;
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/** Getters for option list. */
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const option_list_t &get_options() const;
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/** Adds or removes an option. */
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void add_option(const complete_entry_opt_t &opt);
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bool remove_option(wchar_t short_opt, const wchar_t *long_opt);
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/** Getter for short_opt_str. */
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wcstring &get_short_opt_str();
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const wcstring &get_short_opt_str() const;
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completion_entry_t(const wcstring &c, bool type, const wcstring &options, bool author) :
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short_opt_str(options),
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cmd(c),
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cmd_is_path(type),
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authoritative(author),
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order(++kCompleteOrder)
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{
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}
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};
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/** Set of all completion entries */
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struct completion_entry_set_comparer
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{
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/** Comparison for std::set */
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bool operator()(completion_entry_t *p1, completion_entry_t *p2) const
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{
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/* Paths always come last for no particular reason */
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if (p1->cmd_is_path != p2->cmd_is_path)
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{
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return p1->cmd_is_path < p2->cmd_is_path;
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}
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else
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{
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return p1->cmd < p2->cmd;
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}
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}
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};
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typedef std::set<completion_entry_t *, completion_entry_set_comparer> completion_entry_set_t;
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static completion_entry_set_t completion_set;
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// Comparison function to sort completions by their order field
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static bool compare_completions_by_order(const completion_entry_t *p1, const completion_entry_t *p2)
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{
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return p1->order < p2->order;
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}
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/** The lock that guards the list of completion entries */
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static pthread_mutex_t completion_lock = PTHREAD_MUTEX_INITIALIZER;
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/**
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* The lock that guards the options list of individual completion entries.
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* If both completion_lock and completion_entry_lock are to be taken,
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* completion_lock must be taken first.
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*/
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static pthread_mutex_t completion_entry_lock = PTHREAD_MUTEX_INITIALIZER;
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void completion_entry_t::add_option(const complete_entry_opt_t &opt)
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{
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ASSERT_IS_LOCKED(completion_entry_lock);
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options.push_front(opt);
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}
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const option_list_t &completion_entry_t::get_options() const
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{
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ASSERT_IS_LOCKED(completion_entry_lock);
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return options;
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}
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wcstring &completion_entry_t::get_short_opt_str()
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{
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ASSERT_IS_LOCKED(completion_entry_lock);
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return short_opt_str;
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}
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const wcstring &completion_entry_t::get_short_opt_str() const
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{
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ASSERT_IS_LOCKED(completion_entry_lock);
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return short_opt_str;
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}
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/* completion_t functions */
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completion_t::completion_t(const wcstring &comp, const wcstring &desc, int flags_val) : completion(comp), description(desc), flags(flags_val)
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{
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if (flags & COMPLETE_AUTO_SPACE)
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{
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flags = flags & ~COMPLETE_AUTO_SPACE;
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size_t len = completion.size();
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if (len > 0 && (wcschr(L"/=@:", comp.at(len-1)) != 0))
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flags |= COMPLETE_NO_SPACE;
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}
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}
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completion_t::completion_t(const completion_t &him) : completion(him.completion), description(him.description), flags(him.flags)
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{
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}
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completion_t &completion_t::operator=(const completion_t &him)
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{
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if (this != &him)
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{
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this->completion = him.completion;
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this->description = him.description;
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this->flags = him.flags;
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}
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return *this;
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}
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bool completion_t::operator < (const completion_t& rhs) const
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{
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return this->completion < rhs.completion;
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}
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bool completion_t::operator == (const completion_t& rhs) const
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{
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return this->completion == rhs.completion;
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}
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bool completion_t::operator != (const completion_t& rhs) const
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{
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return !(*this == rhs);
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}
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wcstring_list_t completions_to_wcstring_list(const std::vector<completion_t> &list)
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{
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wcstring_list_t strings;
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strings.reserve(list.size());
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for (std::vector<completion_t>::const_iterator iter = list.begin(); iter != list.end(); ++iter)
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{
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strings.push_back(iter->completion);
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}
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return strings;
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}
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void sort_completions(std::vector<completion_t> &completions)
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{
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std::sort(completions.begin(), completions.end());
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}
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/** Class representing an attempt to compute completions */
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class completer_t
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{
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const complete_type_t type;
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const wcstring initial_cmd;
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std::vector<completion_t> completions;
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wcstring_list_t commands_to_load;
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/** Table of completions conditions that have already been tested and the corresponding test results */
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typedef std::map<wcstring, bool> condition_cache_t;
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condition_cache_t condition_cache;
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public:
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completer_t(const wcstring &c, complete_type_t t) :
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type(t),
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initial_cmd(c)
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{
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}
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bool empty() const
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{
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return completions.empty();
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}
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const std::vector<completion_t> &get_completions(void)
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{
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return completions;
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}
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bool try_complete_variable(const wcstring &str);
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bool try_complete_user(const wcstring &str);
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bool complete_param(const wcstring &cmd_orig,
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const wcstring &popt,
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const wcstring &str,
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bool use_switches);
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void complete_param_expand(const wcstring &str, bool do_file);
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void debug_print_completions();
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void complete_cmd(const wcstring &str,
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bool use_function,
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bool use_builtin,
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bool use_command);
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void complete_from_args(const wcstring &str,
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const wcstring &args,
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const wcstring &desc,
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complete_flags_t flags);
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void complete_cmd_desc(const wcstring &str);
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bool complete_variable(const wcstring &str, size_t start_offset);
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bool condition_test(const wcstring &condition);
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void complete_strings(const wcstring &wc_escaped,
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const wchar_t *desc,
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wcstring(*desc_func)(const wcstring &),
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std::vector<completion_t> &possible_comp,
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complete_flags_t flags);
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expand_flags_t expand_flags() const
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{
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/* Never do command substitution in autosuggestions. Sadly, we also can't yet do job expansion because it's not thread safe. */
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expand_flags_t result = 0;
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if (type == COMPLETE_AUTOSUGGEST)
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result |= EXPAND_SKIP_CMDSUBST | EXPAND_SKIP_JOBS;
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return result;
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}
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void get_commands_to_load(wcstring_list_t *lst)
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{
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if (lst)
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lst->insert(lst->end(), commands_to_load.begin(), commands_to_load.end());
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}
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bool has_commands_to_load() const
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{
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return ! commands_to_load.empty();
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}
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};
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/* Autoloader for completions */
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class completion_autoload_t : public autoload_t
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{
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public:
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completion_autoload_t();
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virtual void command_removed(const wcstring &cmd);
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};
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static completion_autoload_t completion_autoloader;
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/** Constructor */
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completion_autoload_t::completion_autoload_t() : autoload_t(L"fish_complete_path", NULL, 0)
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{
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}
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/** Callback when an autoloaded completion is removed */
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void completion_autoload_t::command_removed(const wcstring &cmd)
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{
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complete_remove(cmd.c_str(), COMMAND, 0, 0);
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}
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/**
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Create a new completion entry
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*/
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void append_completion(std::vector<completion_t> &completions, const wcstring &comp, const wcstring &desc, complete_flags_t flags)
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{
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completions.push_back(completion_t(comp, desc, flags));
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}
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/**
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Test if the specified script returns zero. The result is cached, so
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that if multiple completions use the same condition, it needs only
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be evaluated once. condition_cache_clear must be called after a
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completion run to make sure that there are no stale completions.
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*/
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bool completer_t::condition_test(const wcstring &condition)
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{
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if (condition.empty())
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{
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// fwprintf( stderr, L"No condition specified\n" );
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return 1;
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}
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if (this->type == COMPLETE_AUTOSUGGEST)
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{
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/* Autosuggestion can't support conditions */
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return 0;
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}
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ASSERT_IS_MAIN_THREAD();
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bool test_res;
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condition_cache_t::iterator cached_entry = condition_cache.find(condition);
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if (cached_entry == condition_cache.end())
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{
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/* Compute new value and reinsert it */
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test_res = (0 == exec_subshell(condition));
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condition_cache[condition] = test_res;
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}
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else
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{
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/* Use the old value */
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test_res = cached_entry->second;
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}
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return test_res;
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}
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/** Search for an exactly matching completion entry. Must be called while locked. */
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static completion_entry_t *complete_find_exact_entry(const wcstring &cmd, const bool cmd_is_path)
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{
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ASSERT_IS_LOCKED(completion_lock);
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completion_entry_t *result = NULL;
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completion_entry_t tmp_entry(cmd, cmd_is_path, L"", false);
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completion_entry_set_t::iterator iter = completion_set.find(&tmp_entry);
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if (iter != completion_set.end())
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{
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result = *iter;
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}
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return result;
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}
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/** Locate the specified entry. Create it if it doesn't exist. Must be called while locked. */
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static completion_entry_t *complete_get_exact_entry(const wcstring &cmd, bool cmd_is_path)
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{
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ASSERT_IS_LOCKED(completion_lock);
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completion_entry_t *c;
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c = complete_find_exact_entry(cmd, cmd_is_path);
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if (c == NULL)
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{
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c = new completion_entry_t(cmd, cmd_is_path, L"", false);
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completion_set.insert(c);
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}
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return c;
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}
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void complete_set_authoritative(const wchar_t *cmd, bool cmd_is_path, bool authoritative)
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{
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completion_entry_t *c;
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CHECK(cmd,);
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scoped_lock lock(completion_lock);
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c = complete_get_exact_entry(cmd, cmd_is_path);
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c->authoritative = authoritative;
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}
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void complete_add(const wchar_t *cmd,
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bool cmd_is_path,
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wchar_t short_opt,
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const wchar_t *long_opt,
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int old_mode,
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int result_mode,
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const wchar_t *condition,
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const wchar_t *comp,
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const wchar_t *desc,
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complete_flags_t flags)
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{
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CHECK(cmd,);
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/* Lock the lock that allows us to edit the completion entry list */
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scoped_lock lock(completion_lock);
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/* Lock the lock that allows us to edit individual completion entries */
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scoped_lock lock2(completion_entry_lock);
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completion_entry_t *c;
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c = complete_get_exact_entry(cmd, cmd_is_path);
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/* Create our new option */
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complete_entry_opt_t opt;
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if (short_opt != L'\0')
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{
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int len = 1 + ((result_mode & NO_COMMON) != 0);
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c->get_short_opt_str().push_back(short_opt);
|
|
if (len == 2)
|
|
{
|
|
c->get_short_opt_str().push_back(L':');
|
|
}
|
|
}
|
|
|
|
opt.short_opt = short_opt;
|
|
opt.result_mode = result_mode;
|
|
opt.old_mode=old_mode;
|
|
|
|
if (comp) opt.comp = comp;
|
|
if (condition) opt.condition = condition;
|
|
if (long_opt) opt.long_opt = long_opt;
|
|
if (desc) opt.desc = desc;
|
|
opt.flags = flags;
|
|
|
|
c->add_option(opt);
|
|
}
|
|
|
|
/**
|
|
Remove all completion options in the specified entry that match the
|
|
specified short / long option strings. Returns true if it is now
|
|
empty and should be deleted, false if it's not empty. Must be called while locked.
|
|
*/
|
|
bool completion_entry_t::remove_option(wchar_t short_opt, const wchar_t *long_opt)
|
|
{
|
|
ASSERT_IS_LOCKED(completion_lock);
|
|
ASSERT_IS_LOCKED(completion_entry_lock);
|
|
if ((short_opt == 0) && (long_opt == 0))
|
|
{
|
|
this->options.clear();
|
|
}
|
|
else
|
|
{
|
|
for (option_list_t::iterator iter = this->options.begin(); iter != this->options.end();)
|
|
{
|
|
complete_entry_opt_t &o = *iter;
|
|
if (short_opt==o.short_opt || long_opt == o.long_opt)
|
|
{
|
|
/* fwprintf( stderr,
|
|
L"remove option -%lc --%ls\n",
|
|
o->short_opt?o->short_opt:L' ',
|
|
o->long_opt );
|
|
*/
|
|
if (o.short_opt)
|
|
{
|
|
wcstring &short_opt_str = this->get_short_opt_str();
|
|
size_t idx = short_opt_str.find(o.short_opt);
|
|
if (idx != wcstring::npos)
|
|
{
|
|
/* Consume all colons */
|
|
size_t first_non_colon = idx + 1;
|
|
while (first_non_colon < short_opt_str.size() && short_opt_str.at(first_non_colon) == L':')
|
|
first_non_colon++;
|
|
short_opt_str.erase(idx, first_non_colon - idx);
|
|
}
|
|
}
|
|
|
|
/* Destroy this option and go to the next one */
|
|
iter = this->options.erase(iter);
|
|
}
|
|
else
|
|
{
|
|
/* Just go to the next one */
|
|
++iter;
|
|
}
|
|
}
|
|
}
|
|
return this->options.empty();
|
|
}
|
|
|
|
|
|
void complete_remove(const wchar_t *cmd,
|
|
bool cmd_is_path,
|
|
wchar_t short_opt,
|
|
const wchar_t *long_opt)
|
|
{
|
|
CHECK(cmd,);
|
|
scoped_lock lock(completion_lock);
|
|
scoped_lock lock2(completion_entry_lock);
|
|
|
|
completion_entry_t tmp_entry(cmd, cmd_is_path, L"", false);
|
|
completion_entry_set_t::iterator iter = completion_set.find(&tmp_entry);
|
|
if (iter != completion_set.end())
|
|
{
|
|
completion_entry_t *entry = *iter;
|
|
bool delete_it = entry->remove_option(short_opt, long_opt);
|
|
if (delete_it)
|
|
{
|
|
/* Delete this entry */
|
|
completion_set.erase(iter);
|
|
delete entry;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Formats an error string by prepending the prefix and then appending the str in single quotes */
|
|
static wcstring format_error(const wchar_t *prefix, const wcstring &str)
|
|
{
|
|
wcstring result = prefix;
|
|
result.push_back(L'\'');
|
|
result.append(str);
|
|
result.push_back(L'\'');
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
Find the full path and commandname from a command string 'str'.
|
|
*/
|
|
static void parse_cmd_string(const wcstring &str, wcstring &path, wcstring &cmd)
|
|
{
|
|
if (! path_get_path(str, &path))
|
|
{
|
|
/** Use the empty string as the 'path' for commands that can not be found. */
|
|
path = L"";
|
|
}
|
|
|
|
/* Make sure the path is not included in the command */
|
|
size_t last_slash = str.find_last_of(L'/');
|
|
if (last_slash != wcstring::npos)
|
|
{
|
|
cmd = str.substr(last_slash + 1);
|
|
}
|
|
else
|
|
{
|
|
cmd = str;
|
|
}
|
|
}
|
|
|
|
int complete_is_valid_option(const wcstring &str,
|
|
const wcstring &opt,
|
|
wcstring_list_t *errors,
|
|
bool allow_autoload)
|
|
{
|
|
wcstring cmd, path;
|
|
bool found_match = false;
|
|
bool authoritative = true;
|
|
int opt_found=0;
|
|
std::set<wcstring> gnu_match_set;
|
|
bool is_gnu_opt=false;
|
|
bool is_old_opt=false;
|
|
bool is_short_opt=false;
|
|
bool is_gnu_exact=false;
|
|
size_t gnu_opt_len=0;
|
|
|
|
if (opt.empty())
|
|
return false;
|
|
|
|
std::vector<bool> short_validated;
|
|
/*
|
|
Check some generic things like -- and - options.
|
|
*/
|
|
switch (opt.size())
|
|
{
|
|
|
|
case 0:
|
|
case 1:
|
|
{
|
|
return true;
|
|
}
|
|
|
|
case 2:
|
|
{
|
|
if (opt == L"--")
|
|
{
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (opt.at(0) != L'-')
|
|
{
|
|
if (errors)
|
|
errors->push_back(L"Option does not begin with a '-'");
|
|
return false;
|
|
}
|
|
|
|
|
|
short_validated.resize(opt.size(), 0);
|
|
|
|
is_gnu_opt = opt.at(1) == L'-';
|
|
if (is_gnu_opt)
|
|
{
|
|
size_t opt_end = opt.find(L'=');
|
|
if (opt_end != wcstring::npos)
|
|
{
|
|
gnu_opt_len = opt_end-2;
|
|
}
|
|
else
|
|
{
|
|
gnu_opt_len = opt.size() - 2;
|
|
}
|
|
}
|
|
|
|
parse_cmd_string(str, path, cmd);
|
|
|
|
/*
|
|
Make sure completions are loaded for the specified command
|
|
*/
|
|
if (allow_autoload)
|
|
{
|
|
complete_load(cmd, false);
|
|
}
|
|
|
|
scoped_lock lock(completion_lock);
|
|
scoped_lock lock2(completion_entry_lock);
|
|
for (completion_entry_set_t::const_iterator iter = completion_set.begin(); iter != completion_set.end(); ++iter)
|
|
{
|
|
const completion_entry_t *i = *iter;
|
|
const wcstring &match = i->cmd_is_path ? path : cmd;
|
|
|
|
if (!wildcard_match(match, i->cmd))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
found_match = true;
|
|
|
|
if (! i->authoritative)
|
|
{
|
|
authoritative = false;
|
|
break;
|
|
}
|
|
|
|
const option_list_t &options = i->get_options();
|
|
if (is_gnu_opt)
|
|
{
|
|
for (option_list_t::const_iterator iter = options.begin(); iter != options.end(); ++iter)
|
|
{
|
|
const complete_entry_opt_t &o = *iter;
|
|
if (o.old_mode)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (opt.compare(2, gnu_opt_len, o.long_opt) == 0)
|
|
{
|
|
gnu_match_set.insert(o.long_opt);
|
|
if (opt.compare(2, o.long_opt.size(), o.long_opt))
|
|
{
|
|
is_gnu_exact = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Check for old style options */
|
|
for (option_list_t::const_iterator iter = options.begin(); iter != options.end(); ++iter)
|
|
{
|
|
const complete_entry_opt_t &o = *iter;
|
|
|
|
if (!o.old_mode)
|
|
continue;
|
|
|
|
|
|
if (opt.compare(1, wcstring::npos, o.long_opt)==0)
|
|
{
|
|
opt_found = true;
|
|
is_old_opt = true;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
if (is_old_opt)
|
|
break;
|
|
|
|
for (size_t opt_idx = 1; opt_idx < opt.size(); opt_idx++)
|
|
{
|
|
const wcstring &short_opt_str = i->get_short_opt_str();
|
|
size_t str_idx = short_opt_str.find(opt.at(opt_idx));
|
|
if (str_idx != wcstring::npos)
|
|
{
|
|
if (str_idx + 1 < short_opt_str.size() && short_opt_str.at(str_idx + 1) == L':')
|
|
{
|
|
/*
|
|
This is a short option with an embedded argument,
|
|
call complete_is_valid_argument on the argument.
|
|
*/
|
|
const wcstring nopt = L"-" + opt.substr(1, 1);
|
|
short_validated.at(opt_idx) =
|
|
complete_is_valid_argument(str, nopt, opt.substr(2));
|
|
}
|
|
else
|
|
{
|
|
short_validated.at(opt_idx) = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (authoritative)
|
|
{
|
|
|
|
if (!is_gnu_opt && !is_old_opt)
|
|
is_short_opt = 1;
|
|
|
|
|
|
if (is_short_opt)
|
|
{
|
|
opt_found=1;
|
|
for (size_t j=1; j<opt.size(); j++)
|
|
{
|
|
if (!short_validated.at(j))
|
|
{
|
|
if (errors)
|
|
{
|
|
const wcstring str = opt.substr(j, 1);
|
|
errors->push_back(format_error(_(L"Unknown option: "), str.c_str()));
|
|
}
|
|
|
|
opt_found = 0;
|
|
break;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
if (is_gnu_opt)
|
|
{
|
|
opt_found = is_gnu_exact || (gnu_match_set.size() == 1);
|
|
if (errors && !opt_found)
|
|
{
|
|
const wchar_t *prefix;
|
|
if (gnu_match_set.empty())
|
|
{
|
|
prefix = _(L"Unknown option: ");
|
|
}
|
|
else
|
|
{
|
|
prefix = _(L"Multiple matches for option: ");
|
|
}
|
|
errors->push_back(format_error(prefix, opt));
|
|
}
|
|
}
|
|
}
|
|
|
|
return (authoritative && found_match)?opt_found:true;
|
|
}
|
|
|
|
bool complete_is_valid_argument(const wcstring &str, const wcstring &opt, const wcstring &arg)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
Copy any strings in possible_comp which have the specified prefix
|
|
to the completer's completion array. The prefix may contain wildcards.
|
|
The output will consist of completion_t structs.
|
|
|
|
There are three ways to specify descriptions for each
|
|
completion. Firstly, if a description has already been added to the
|
|
completion, it is _not_ replaced. Secondly, if the desc_func
|
|
function is specified, use it to determine a dynamic
|
|
completion. Thirdly, if none of the above are available, the desc
|
|
string is used as a description.
|
|
|
|
\param wc_escaped the prefix, possibly containing wildcards. The wildcard should not have been unescaped, i.e. '*' should be used for any string, not the ANY_STRING character.
|
|
\param desc the default description, used for completions with no embedded description. The description _may_ contain a COMPLETE_SEP character, if not, one will be prefixed to it
|
|
\param desc_func the function that generates a description for those completions witout an embedded description
|
|
\param possible_comp the list of possible completions to iterate over
|
|
*/
|
|
|
|
void completer_t::complete_strings(const wcstring &wc_escaped,
|
|
const wchar_t *desc,
|
|
wcstring(*desc_func)(const wcstring &),
|
|
std::vector<completion_t> &possible_comp,
|
|
complete_flags_t flags)
|
|
{
|
|
wcstring tmp = wc_escaped;
|
|
if (! expand_one(tmp, EXPAND_SKIP_CMDSUBST | EXPAND_SKIP_WILDCARDS | this->expand_flags()))
|
|
return;
|
|
|
|
const wchar_t *wc = parse_util_unescape_wildcards(tmp.c_str());
|
|
|
|
for (size_t i=0; i< possible_comp.size(); i++)
|
|
{
|
|
wcstring temp = possible_comp.at(i).completion;
|
|
const wchar_t *next_str = temp.empty()?NULL:temp.c_str();
|
|
|
|
if (next_str)
|
|
{
|
|
wildcard_complete(next_str, wc, desc, desc_func, this->completions, flags);
|
|
}
|
|
}
|
|
|
|
free((void *)wc);
|
|
}
|
|
|
|
/**
|
|
If command to complete is short enough, substitute
|
|
the description with the whatis information for the executable.
|
|
*/
|
|
void completer_t::complete_cmd_desc(const wcstring &str)
|
|
{
|
|
ASSERT_IS_MAIN_THREAD();
|
|
|
|
const wchar_t *cmd_start;
|
|
int skip;
|
|
|
|
const wchar_t * const cmd = str.c_str();
|
|
cmd_start=wcsrchr(cmd, L'/');
|
|
|
|
if (cmd_start)
|
|
cmd_start++;
|
|
else
|
|
cmd_start = cmd;
|
|
|
|
/*
|
|
Using apropos with a single-character search term produces far
|
|
to many results - require at least two characters if we don't
|
|
know the location of the whatis-database.
|
|
*/
|
|
if (wcslen(cmd_start) < 2)
|
|
return;
|
|
|
|
if (wildcard_has(cmd_start, 0))
|
|
{
|
|
return;
|
|
}
|
|
|
|
skip = 1;
|
|
|
|
for (size_t i=0; i< this->completions.size(); i++)
|
|
{
|
|
const completion_t &c = this->completions.at(i);
|
|
|
|
if (c.completion.empty() || (c.completion[c.completion.size()-1] != L'/'))
|
|
{
|
|
skip = 0;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
if (skip)
|
|
{
|
|
return;
|
|
}
|
|
|
|
|
|
wcstring lookup_cmd(L"__fish_describe_command ");
|
|
lookup_cmd.append(escape_string(cmd_start, 1));
|
|
|
|
std::map<wcstring, wcstring> lookup;
|
|
|
|
/*
|
|
First locate a list of possible descriptions using a single
|
|
call to apropos or a direct search if we know the location
|
|
of the whatis database. This can take some time on slower
|
|
systems with a large set of manuals, but it should be ok
|
|
since apropos is only called once.
|
|
*/
|
|
wcstring_list_t list;
|
|
if (exec_subshell(lookup_cmd, list) != -1)
|
|
{
|
|
|
|
/*
|
|
Then discard anything that is not a possible completion and put
|
|
the result into a hashtable with the completion as key and the
|
|
description as value.
|
|
|
|
Should be reasonably fast, since no memory allocations are needed.
|
|
*/
|
|
for (size_t i=0; i < list.size(); i++)
|
|
{
|
|
const wcstring &elstr = list.at(i);
|
|
|
|
const wcstring fullkey(elstr, wcslen(cmd_start));
|
|
|
|
size_t tab_idx = fullkey.find(L'\t');
|
|
if (tab_idx == wcstring::npos)
|
|
continue;
|
|
|
|
const wcstring key(fullkey, 0, tab_idx);
|
|
wcstring val(fullkey, tab_idx + 1);
|
|
|
|
/*
|
|
And once again I make sure the first character is uppercased
|
|
because I like it that way, and I get to decide these
|
|
things.
|
|
*/
|
|
if (! val.empty())
|
|
val[0]=towupper(val[0]);
|
|
|
|
lookup[key] = val;
|
|
}
|
|
|
|
/*
|
|
Then do a lookup on every completion and if a match is found,
|
|
change to the new description.
|
|
|
|
This needs to do a reallocation for every description added, but
|
|
there shouldn't be that many completions, so it should be ok.
|
|
*/
|
|
for (size_t i=0; i<this->completions.size(); i++)
|
|
{
|
|
completion_t &completion = this->completions.at(i);
|
|
const wcstring &el = completion.completion;
|
|
if (el.empty())
|
|
continue;
|
|
|
|
std::map<wcstring, wcstring>::iterator new_desc_iter = lookup.find(el);
|
|
if (new_desc_iter != lookup.end())
|
|
completion.description = new_desc_iter->second;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
Returns a description for the specified function, or an empty string if none
|
|
*/
|
|
static wcstring complete_function_desc(const wcstring &fn)
|
|
{
|
|
wcstring result;
|
|
bool has_description = function_get_desc(fn, &result);
|
|
if (! has_description)
|
|
{
|
|
function_get_definition(fn, &result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
Complete the specified command name. Search for executables in the
|
|
path, executables defined using an absolute path, functions,
|
|
builtins and directories for implicit cd commands.
|
|
|
|
\param cmd the command string to find completions for
|
|
|
|
\param comp the list to add all completions to
|
|
*/
|
|
void completer_t::complete_cmd(const wcstring &str_cmd, bool use_function, bool use_builtin, bool use_command)
|
|
{
|
|
/* Paranoia */
|
|
if (str_cmd.empty())
|
|
return;
|
|
|
|
std::vector<completion_t> possible_comp;
|
|
|
|
env_var_t cdpath = env_get_string(L"CDPATH");
|
|
if (cdpath.missing_or_empty())
|
|
cdpath = L".";
|
|
|
|
const bool wants_description = (type == COMPLETE_DEFAULT);
|
|
|
|
if (str_cmd.find(L'/') != wcstring::npos || str_cmd.at(0) == L'~')
|
|
{
|
|
|
|
if (use_command)
|
|
{
|
|
|
|
if (expand_string(str_cmd, this->completions, ACCEPT_INCOMPLETE | EXECUTABLES_ONLY | this->expand_flags()) != EXPAND_ERROR)
|
|
{
|
|
if (wants_description)
|
|
{
|
|
this->complete_cmd_desc(str_cmd);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (use_command)
|
|
{
|
|
|
|
const env_var_t path = env_get_string(L"PATH");
|
|
if (!path.missing())
|
|
{
|
|
wcstring base_path;
|
|
wcstokenizer tokenizer(path, ARRAY_SEP_STR);
|
|
while (tokenizer.next(base_path))
|
|
{
|
|
if (base_path.empty())
|
|
continue;
|
|
|
|
/* Make sure the base path ends with a slash */
|
|
if (base_path.at(base_path.size() - 1) != L'/')
|
|
base_path.push_back(L'/');
|
|
|
|
wcstring nxt_completion = base_path;
|
|
nxt_completion.append(str_cmd);
|
|
|
|
size_t prev_count = this->completions.size();
|
|
if (expand_string(nxt_completion,
|
|
this->completions,
|
|
ACCEPT_INCOMPLETE | EXECUTABLES_ONLY | this->expand_flags()) != EXPAND_ERROR)
|
|
{
|
|
/* For all new completions, if COMPLETE_NO_CASE is set, then use only the last path component */
|
|
for (size_t i=prev_count; i< this->completions.size(); i++)
|
|
{
|
|
completion_t &c = this->completions.at(i);
|
|
if (c.flags & COMPLETE_NO_CASE)
|
|
{
|
|
|
|
c.completion.erase(0, base_path.size());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (wants_description)
|
|
this->complete_cmd_desc(str_cmd);
|
|
}
|
|
}
|
|
|
|
/*
|
|
These return the original strings - don't free them
|
|
*/
|
|
|
|
if (use_function)
|
|
{
|
|
//function_get_names( &possible_comp, cmd[0] == L'_' );
|
|
wcstring_list_t names = function_get_names(str_cmd.at(0) == L'_');
|
|
for (size_t i=0; i < names.size(); i++)
|
|
{
|
|
possible_comp.push_back(completion_t(names.at(i)));
|
|
}
|
|
|
|
this->complete_strings(str_cmd, 0, &complete_function_desc, possible_comp, 0);
|
|
}
|
|
|
|
possible_comp.clear();
|
|
|
|
if (use_builtin)
|
|
{
|
|
builtin_get_names(possible_comp);
|
|
this->complete_strings(str_cmd, 0, &builtin_get_desc, possible_comp, 0);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
Evaluate the argument list (as supplied by complete -a) and insert
|
|
any return matching completions. Matching is done using \c
|
|
copy_strings_with_prefix, meaning the completion may contain
|
|
wildcards. Logically, this is not always the right thing to do, but
|
|
I have yet to come up with a case where this matters.
|
|
|
|
\param str The string to complete.
|
|
\param args The list of option arguments to be evaluated.
|
|
\param desc Description of the completion
|
|
\param comp_out The list into which the results will be inserted
|
|
*/
|
|
void completer_t::complete_from_args(const wcstring &str,
|
|
const wcstring &args,
|
|
const wcstring &desc,
|
|
complete_flags_t flags)
|
|
{
|
|
|
|
std::vector<completion_t> possible_comp;
|
|
|
|
bool is_autosuggest = (this->type == COMPLETE_AUTOSUGGEST);
|
|
parser_t parser(is_autosuggest ? PARSER_TYPE_COMPLETIONS_ONLY : PARSER_TYPE_GENERAL, false);
|
|
|
|
/* If type is COMPLETE_AUTOSUGGEST, it means we're on a background thread, so don't call proc_push_interactive */
|
|
if (! is_autosuggest)
|
|
proc_push_interactive(0);
|
|
|
|
parser.eval_args(args.c_str(), possible_comp);
|
|
|
|
if (! is_autosuggest)
|
|
proc_pop_interactive();
|
|
|
|
this->complete_strings(str, desc.c_str(), 0, possible_comp, flags);
|
|
}
|
|
|
|
/**
|
|
Match against an old style long option
|
|
*/
|
|
static int param_match_old(const complete_entry_opt_t *e,
|
|
const wchar_t *optstr)
|
|
{
|
|
return (optstr[0] == L'-') && (e->long_opt == &optstr[1]);
|
|
}
|
|
|
|
/**
|
|
Match a parameter
|
|
*/
|
|
static int param_match(const complete_entry_opt_t *e,
|
|
const wchar_t *optstr)
|
|
{
|
|
if (e->short_opt != L'\0' &&
|
|
e->short_opt == optstr[1])
|
|
return 1;
|
|
|
|
if (!e->old_mode && (wcsncmp(L"--", optstr, 2) == 0))
|
|
{
|
|
if (e->long_opt == &optstr[2])
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
Test if a string is an option with an argument, like --color=auto or -I/usr/include
|
|
*/
|
|
static wchar_t *param_match2(const complete_entry_opt_t *e,
|
|
const wchar_t *optstr)
|
|
{
|
|
if (e->short_opt != L'\0' && e->short_opt == optstr[1])
|
|
return (wchar_t *)&optstr[2];
|
|
if (!e->old_mode && (wcsncmp(L"--", optstr, 2) == 0))
|
|
{
|
|
size_t len = e->long_opt.size();
|
|
|
|
if (wcsncmp(e->long_opt.c_str(), &optstr[2],len) == 0)
|
|
{
|
|
if (optstr[len+2] == L'=')
|
|
return (wchar_t *)&optstr[len+3];
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
Tests whether a short option is a viable completion
|
|
*/
|
|
static int short_ok(const wcstring &arg_str, wchar_t nextopt, const wcstring &allopt_str)
|
|
{
|
|
const wchar_t *arg = arg_str.c_str();
|
|
const wchar_t *allopt = allopt_str.c_str();
|
|
const wchar_t *ptr;
|
|
|
|
if (arg[0] != L'-')
|
|
return arg[0] == L'\0';
|
|
if (arg[1] == L'-')
|
|
return 0;
|
|
|
|
if (wcschr(arg, nextopt) != 0)
|
|
return 0;
|
|
|
|
for (ptr = arg+1; *ptr; ptr++)
|
|
{
|
|
const wchar_t *tmp = wcschr(allopt, *ptr);
|
|
/* Unknown option */
|
|
if (tmp == 0)
|
|
{
|
|
/*fwprintf( stderr, L"Unknown option %lc", *ptr );*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (*(tmp+1) == L':')
|
|
{
|
|
/* fwprintf( stderr, L"Woot %ls", allopt );*/
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
void complete_load(const wcstring &name, bool reload)
|
|
{
|
|
completion_autoloader.load(name, reload);
|
|
}
|
|
|
|
/**
|
|
Find completion for the argument str of command cmd_orig with
|
|
previous option popt. Insert results into comp_out. Return 0 if file
|
|
completion should be disabled, 1 otherwise.
|
|
*/
|
|
struct local_options_t
|
|
{
|
|
wcstring short_opt_str;
|
|
option_list_t options;
|
|
};
|
|
bool completer_t::complete_param(const wcstring &scmd_orig, const wcstring &spopt, const wcstring &sstr, bool use_switches)
|
|
{
|
|
|
|
const wchar_t * const cmd_orig = scmd_orig.c_str(), * const popt = spopt.c_str(), * const str = sstr.c_str();
|
|
|
|
bool use_common=1, use_files=1;
|
|
|
|
wcstring cmd, path;
|
|
parse_cmd_string(cmd_orig, path, cmd);
|
|
|
|
if (this->type == COMPLETE_DEFAULT)
|
|
{
|
|
complete_load(cmd, true);
|
|
}
|
|
else if (this->type == COMPLETE_AUTOSUGGEST)
|
|
{
|
|
/* Maybe indicate we should try loading this on the main thread */
|
|
if (! list_contains_string(this->commands_to_load, cmd) && ! completion_autoloader.has_tried_loading(cmd))
|
|
{
|
|
this->commands_to_load.push_back(cmd);
|
|
}
|
|
}
|
|
|
|
/* Make a list of lists of all options that we care about */
|
|
std::vector<local_options_t> all_options;
|
|
{
|
|
scoped_lock lock(completion_lock);
|
|
scoped_lock lock2(completion_entry_lock);
|
|
for (completion_entry_set_t::const_iterator iter = completion_set.begin(); iter != completion_set.end(); ++iter)
|
|
{
|
|
const completion_entry_t *i = *iter;
|
|
const wcstring &match = i->cmd_is_path ? path : cmd;
|
|
if (! wildcard_match(match, i->cmd))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
/* Copy all of their options into our list */
|
|
all_options.push_back(local_options_t());
|
|
all_options.back().short_opt_str = i->get_short_opt_str();
|
|
all_options.back().options = i->get_options(); //Oof, this is a lot of copying
|
|
}
|
|
}
|
|
|
|
/* Now release the lock and test each option that we captured above.
|
|
We have to do this outside the lock because callouts (like the condition) may add or remove completions.
|
|
See https://github.com/ridiculousfish/fishfish/issues/2 */
|
|
for (std::vector<local_options_t>::const_iterator iter = all_options.begin(); iter != all_options.end(); iter++)
|
|
{
|
|
const option_list_t &options = iter->options;
|
|
use_common=1;
|
|
if (use_switches)
|
|
{
|
|
|
|
if (str[0] == L'-')
|
|
{
|
|
/* Check if we are entering a combined option and argument
|
|
(like --color=auto or -I/usr/include) */
|
|
for (option_list_t::const_iterator oiter = options.begin(); oiter != options.end(); ++oiter)
|
|
{
|
|
const complete_entry_opt_t *o = &*oiter;
|
|
wchar_t *arg;
|
|
if ((arg=param_match2(o, str))!=0 && this->condition_test(o->condition))
|
|
{
|
|
if (o->result_mode & NO_COMMON) use_common = false;
|
|
if (o->result_mode & NO_FILES) use_files = false;
|
|
complete_from_args(arg, o->comp, o->localized_desc(), o->flags);
|
|
}
|
|
|
|
}
|
|
}
|
|
else if (popt[0] == L'-')
|
|
{
|
|
/* Set to true if we found a matching old-style switch */
|
|
int old_style_match = 0;
|
|
|
|
/*
|
|
If we are using old style long options, check for them
|
|
first
|
|
*/
|
|
for (option_list_t::const_iterator oiter = options.begin(); oiter != options.end(); ++oiter)
|
|
{
|
|
const complete_entry_opt_t *o = &*oiter;
|
|
if (o->old_mode)
|
|
{
|
|
if (param_match_old(o, popt) && this->condition_test(o->condition))
|
|
{
|
|
old_style_match = 1;
|
|
if (o->result_mode & NO_COMMON) use_common = false;
|
|
if (o->result_mode & NO_FILES) use_files = false;
|
|
complete_from_args(str, o->comp, o->localized_desc(), o->flags);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
No old style option matched, or we are not using old
|
|
style options. We check if any short (or gnu style
|
|
options do.
|
|
*/
|
|
if (!old_style_match)
|
|
{
|
|
for (option_list_t::const_iterator oiter = options.begin(); oiter != options.end(); ++oiter)
|
|
{
|
|
const complete_entry_opt_t *o = &*oiter;
|
|
/*
|
|
Gnu-style options with _optional_ arguments must
|
|
be specified as a single token, so that it can
|
|
be differed from a regular argument.
|
|
*/
|
|
if (!o->old_mode && ! o->long_opt.empty() && !(o->result_mode & NO_COMMON))
|
|
continue;
|
|
|
|
if (param_match(o, popt) && this->condition_test(o->condition))
|
|
{
|
|
if (o->result_mode & NO_COMMON) use_common = false;
|
|
if (o->result_mode & NO_FILES) use_files = false;
|
|
complete_from_args(str, o->comp.c_str(), o->localized_desc(), o->flags);
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (use_common)
|
|
{
|
|
|
|
for (option_list_t::const_iterator oiter = options.begin(); oiter != options.end(); ++oiter)
|
|
{
|
|
const complete_entry_opt_t *o = &*oiter;
|
|
/*
|
|
If this entry is for the base command,
|
|
check if any of the arguments match
|
|
*/
|
|
|
|
if (!this->condition_test(o->condition))
|
|
continue;
|
|
|
|
|
|
if ((o->short_opt == L'\0') && (o->long_opt[0]==L'\0'))
|
|
{
|
|
use_files &= ((o->result_mode & NO_FILES)==0);
|
|
complete_from_args(str, o->comp, o->localized_desc(), o->flags);
|
|
}
|
|
|
|
if (wcslen(str) > 0 && use_switches)
|
|
{
|
|
/*
|
|
Check if the short style option matches
|
|
*/
|
|
if (o->short_opt != L'\0' &&
|
|
short_ok(str, o->short_opt, iter->short_opt_str))
|
|
{
|
|
const wchar_t *desc = o->localized_desc();
|
|
wchar_t completion[2];
|
|
completion[0] = o->short_opt;
|
|
completion[1] = 0;
|
|
|
|
append_completion(this->completions, completion, desc, 0);
|
|
|
|
}
|
|
|
|
/*
|
|
Check if the long style option matches
|
|
*/
|
|
if (o->long_opt[0] != L'\0')
|
|
{
|
|
int match=0, match_no_case=0;
|
|
|
|
wcstring whole_opt;
|
|
whole_opt.append(o->old_mode?L"-":L"--");
|
|
whole_opt.append(o->long_opt);
|
|
|
|
match = string_prefixes_string(str, whole_opt);
|
|
|
|
if (!match)
|
|
{
|
|
match_no_case = wcsncasecmp(str, whole_opt.c_str(), wcslen(str))==0;
|
|
}
|
|
|
|
if (match || match_no_case)
|
|
{
|
|
int has_arg=0; /* Does this switch have any known arguments */
|
|
int req_arg=0; /* Does this switch _require_ an argument */
|
|
|
|
size_t offset = 0;
|
|
complete_flags_t flags = 0;
|
|
|
|
|
|
if (match)
|
|
offset = wcslen(str);
|
|
else
|
|
flags = COMPLETE_NO_CASE;
|
|
|
|
has_arg = ! o->comp.empty();
|
|
req_arg = (o->result_mode & NO_COMMON);
|
|
|
|
if (!o->old_mode && (has_arg && !req_arg))
|
|
{
|
|
|
|
/*
|
|
Optional arguments to a switch can
|
|
only be handled using the '=', so we
|
|
add it as a completion. By default
|
|
we avoid using '=' and instead rely
|
|
on '--switch switch-arg', since it
|
|
is more commonly supported by
|
|
homebrew getopt-like functions.
|
|
*/
|
|
wcstring completion = format_string(L"%ls=", whole_opt.c_str()+offset);
|
|
append_completion(this->completions,
|
|
completion,
|
|
C_(o->desc.c_str()),
|
|
flags);
|
|
|
|
}
|
|
|
|
append_completion(this->completions,
|
|
whole_opt.c_str() + offset,
|
|
C_(o->desc.c_str()),
|
|
flags);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return use_files;
|
|
}
|
|
|
|
/**
|
|
Perform file completion on the specified string
|
|
*/
|
|
void completer_t::complete_param_expand(const wcstring &sstr, bool do_file)
|
|
{
|
|
const wchar_t * const str = sstr.c_str();
|
|
const wchar_t *comp_str;
|
|
|
|
if (string_prefixes_string(L"--", sstr) && (comp_str = wcschr(str, L'=')))
|
|
{
|
|
comp_str++;
|
|
}
|
|
else
|
|
{
|
|
comp_str = str;
|
|
}
|
|
|
|
expand_flags_t flags = EXPAND_SKIP_CMDSUBST | ACCEPT_INCOMPLETE;
|
|
|
|
if (! do_file)
|
|
flags |= EXPAND_SKIP_WILDCARDS;
|
|
|
|
/* Squelch file descriptions per issue 254 */
|
|
if (type == COMPLETE_AUTOSUGGEST || do_file)
|
|
flags |= EXPAND_NO_DESCRIPTIONS;
|
|
|
|
if (expand_string(comp_str,
|
|
this->completions,
|
|
flags | this->expand_flags()) == EXPAND_ERROR)
|
|
{
|
|
debug(3, L"Error while expanding string '%ls'", comp_str);
|
|
}
|
|
}
|
|
|
|
void completer_t::debug_print_completions()
|
|
{
|
|
for (size_t i=0; i < completions.size(); i++)
|
|
{
|
|
printf("- Completion: %ls\n", completions.at(i).completion.c_str());
|
|
}
|
|
}
|
|
|
|
/**
|
|
Complete the specified string as an environment variable
|
|
*/
|
|
bool completer_t::complete_variable(const wcstring &str, size_t start_offset)
|
|
{
|
|
const wchar_t * const whole_var = str.c_str();
|
|
const wchar_t *var = &whole_var[start_offset];
|
|
size_t varlen = wcslen(var);
|
|
int res = 0;
|
|
bool wants_description = (type != COMPLETE_AUTOSUGGEST);
|
|
|
|
const wcstring_list_t names = env_get_names(0);
|
|
for (size_t i=0; i<names.size(); i++)
|
|
{
|
|
const wcstring & env_name = names.at(i);
|
|
size_t namelen = env_name.size();
|
|
int match=0, match_no_case=0;
|
|
|
|
if (varlen > namelen)
|
|
continue;
|
|
|
|
match = string_prefixes_string(var, env_name);
|
|
|
|
if (!match)
|
|
{
|
|
match_no_case = (wcsncasecmp(var, env_name.c_str(), varlen) == 0);
|
|
}
|
|
|
|
if (match || match_no_case)
|
|
{
|
|
wcstring comp;
|
|
int flags = 0;
|
|
|
|
if (match)
|
|
{
|
|
comp.append(env_name.c_str() + varlen);
|
|
}
|
|
else
|
|
{
|
|
comp.append(whole_var, start_offset);
|
|
comp.append(env_name);
|
|
flags = COMPLETE_NO_CASE | COMPLETE_DONT_ESCAPE;
|
|
}
|
|
|
|
wcstring desc;
|
|
if (wants_description)
|
|
{
|
|
env_var_t value_unescaped = env_get_string(env_name);
|
|
if (value_unescaped.missing())
|
|
continue;
|
|
|
|
wcstring value = expand_escape_variable(value_unescaped);
|
|
if (type != COMPLETE_AUTOSUGGEST)
|
|
desc = format_string(COMPLETE_VAR_DESC_VAL, value.c_str());
|
|
}
|
|
|
|
append_completion(this->completions, comp.c_str(), desc.c_str(), flags);
|
|
res =1;
|
|
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
Search the specified string for the \$ sign. If found, try to
|
|
complete as an environment variable.
|
|
|
|
\return 0 if unable to complete, 1 otherwise
|
|
*/
|
|
bool completer_t::try_complete_variable(const wcstring &str)
|
|
{
|
|
size_t i = str.size();
|
|
while (i--)
|
|
{
|
|
wchar_t c = str.at(i);
|
|
if (c == L'$')
|
|
{
|
|
/* wprintf( L"Var prefix \'%ls\'\n", &cmd[i+1] );*/
|
|
return this->complete_variable(str, i+1);
|
|
}
|
|
if (!isalnum(c) && c != L'_')
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
Try to complete the specified string as a username. This is used by
|
|
~USER type expansion.
|
|
|
|
\return 0 if unable to complete, 1 otherwise
|
|
*/
|
|
bool completer_t::try_complete_user(const wcstring &str)
|
|
{
|
|
const wchar_t *cmd = str.c_str();
|
|
const wchar_t *first_char=cmd;
|
|
int res=0;
|
|
double start_time = timef();
|
|
|
|
if (*first_char ==L'~' && !wcschr(first_char, L'/'))
|
|
{
|
|
const wchar_t *user_name = first_char+1;
|
|
const wchar_t *name_end = wcschr(user_name, L'~');
|
|
if (name_end == 0)
|
|
{
|
|
struct passwd *pw;
|
|
size_t name_len = wcslen(user_name);
|
|
|
|
setpwent();
|
|
|
|
while ((pw=getpwent()) != 0)
|
|
{
|
|
double current_time = timef();
|
|
|
|
if (current_time - start_time > 0.2)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
if (pw->pw_name)
|
|
{
|
|
const wcstring pw_name_str = str2wcstring(pw->pw_name);
|
|
const wchar_t *pw_name = pw_name_str.c_str();
|
|
if (wcsncmp(user_name, pw_name, name_len)==0)
|
|
{
|
|
wcstring desc = format_string(COMPLETE_USER_DESC, pw_name);
|
|
append_completion(this->completions,
|
|
&pw_name[name_len],
|
|
desc,
|
|
COMPLETE_NO_SPACE);
|
|
|
|
res=1;
|
|
}
|
|
else if (wcsncasecmp(user_name, pw_name, name_len)==0)
|
|
{
|
|
wcstring name = format_string(L"~%ls", pw_name);
|
|
wcstring desc = format_string(COMPLETE_USER_DESC, pw_name);
|
|
|
|
append_completion(this->completions,
|
|
name,
|
|
desc,
|
|
COMPLETE_NO_CASE | COMPLETE_DONT_ESCAPE | COMPLETE_NO_SPACE);
|
|
res=1;
|
|
}
|
|
}
|
|
}
|
|
endpwent();
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
void complete(const wcstring &cmd, std::vector<completion_t> &comps, complete_type_t type, wcstring_list_t *commands_to_load)
|
|
{
|
|
/* Make our completer */
|
|
completer_t completer(cmd, type);
|
|
|
|
const wchar_t *tok_begin, *tok_end, *cmdsubst_begin, *cmdsubst_end, *prev_begin, *prev_end;
|
|
wcstring current_token, prev_token;
|
|
wcstring current_command;
|
|
int on_command=0;
|
|
size_t pos;
|
|
bool done=false;
|
|
int use_command = 1;
|
|
int use_function = 1;
|
|
int use_builtin = 1;
|
|
int had_ddash = 0;
|
|
|
|
// debug( 1, L"Complete '%ls'", cmd );
|
|
|
|
size_t cursor_pos = cmd.size();
|
|
|
|
const wchar_t *cmd_cstr = cmd.c_str();
|
|
parse_util_cmdsubst_extent(cmd_cstr, cursor_pos, &cmdsubst_begin, &cmdsubst_end);
|
|
parse_util_token_extent(cmd_cstr, cursor_pos, &tok_begin, &tok_end, &prev_begin, &prev_end);
|
|
|
|
if (!cmdsubst_begin)
|
|
done=1;
|
|
|
|
|
|
/**
|
|
If we are completing a variable name or a tilde expansion user
|
|
name, we do that and return. No need for any other completions.
|
|
*/
|
|
|
|
if (!done)
|
|
{
|
|
wcstring tmp = tok_begin;
|
|
done = completer.try_complete_variable(tmp) || completer.try_complete_user(tmp);
|
|
}
|
|
|
|
if (!done)
|
|
{
|
|
pos = cursor_pos-(cmdsubst_begin-cmd_cstr);
|
|
|
|
wcstring buff = wcstring(cmdsubst_begin, cmdsubst_end-cmdsubst_begin);
|
|
|
|
int had_cmd=0;
|
|
int end_loop=0;
|
|
|
|
tokenizer_t tok(buff.c_str(), TOK_ACCEPT_UNFINISHED | TOK_SQUASH_ERRORS);
|
|
while (tok_has_next(&tok) && !end_loop)
|
|
{
|
|
switch (tok_last_type(&tok))
|
|
{
|
|
|
|
case TOK_STRING:
|
|
{
|
|
|
|
const wcstring ncmd = tok_last(&tok);
|
|
int is_ddash = (ncmd == L"--") && ((tok_get_pos(&tok)+2) < (long)pos);
|
|
|
|
if (!had_cmd)
|
|
{
|
|
|
|
if (parser_keywords_is_subcommand(ncmd))
|
|
{
|
|
if (ncmd == L"builtin")
|
|
{
|
|
use_function = 0;
|
|
use_command = 0;
|
|
use_builtin = 1;
|
|
}
|
|
else if (ncmd == L"command")
|
|
{
|
|
use_command = 1;
|
|
use_function = 0;
|
|
use_builtin = 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
|
|
if (!is_ddash ||
|
|
((use_command && use_function && use_builtin)))
|
|
{
|
|
current_command = ncmd;
|
|
|
|
size_t token_end = tok_get_pos(&tok) + ncmd.size();
|
|
|
|
on_command = (pos <= token_end);
|
|
had_cmd=1;
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
if (is_ddash)
|
|
{
|
|
had_ddash = 1;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case TOK_END:
|
|
case TOK_PIPE:
|
|
case TOK_BACKGROUND:
|
|
{
|
|
had_cmd=0;
|
|
had_ddash = 0;
|
|
use_command = 1;
|
|
use_function = 1;
|
|
use_builtin = 1;
|
|
break;
|
|
}
|
|
|
|
case TOK_ERROR:
|
|
{
|
|
end_loop=1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (tok_get_pos(&tok) >= (long)pos)
|
|
{
|
|
end_loop=1;
|
|
}
|
|
|
|
tok_next(&tok);
|
|
|
|
}
|
|
|
|
/*
|
|
Get the string to complete
|
|
*/
|
|
|
|
current_token.assign(tok_begin, cursor_pos-(tok_begin-cmd_cstr));
|
|
|
|
if (prev_begin)
|
|
{
|
|
prev_token.assign(prev_begin, prev_end - prev_begin);
|
|
}
|
|
else
|
|
{
|
|
prev_token.clear();
|
|
}
|
|
|
|
// debug( 0, L"on_command: %d, %ls %ls\n", on_command, current_command, current_token );
|
|
|
|
/*
|
|
Check if we are using the 'command' or 'builtin' builtins
|
|
_and_ we are writing a switch instead of a command. In that
|
|
case, complete using the builtins completions, not using a
|
|
subcommand.
|
|
*/
|
|
|
|
if ((on_command || current_token == L"--") &&
|
|
string_prefixes_string(L"-", current_token) &&
|
|
!(use_command && use_function && use_builtin))
|
|
{
|
|
if (use_command == 0)
|
|
current_command = L"builtin";
|
|
else
|
|
current_command = L"command";
|
|
|
|
had_cmd = 1;
|
|
on_command = 0;
|
|
}
|
|
|
|
/*
|
|
Use command completions if in between commands
|
|
*/
|
|
if (!had_cmd)
|
|
{
|
|
on_command=1;
|
|
}
|
|
|
|
|
|
if (on_command)
|
|
{
|
|
/* Complete command filename */
|
|
completer.complete_cmd(current_token, use_function, use_builtin, use_command);
|
|
}
|
|
else
|
|
{
|
|
bool do_file = false;
|
|
|
|
wcstring current_command_unescape = current_command;
|
|
wcstring prev_token_unescape = prev_token;
|
|
wcstring current_token_unescape = current_token;
|
|
|
|
if (unescape_string(current_command_unescape, 0) &&
|
|
unescape_string(prev_token_unescape, 0) &&
|
|
unescape_string(current_token_unescape, UNESCAPE_INCOMPLETE))
|
|
{
|
|
do_file = completer.complete_param(current_command_unescape,
|
|
prev_token_unescape,
|
|
current_token_unescape,
|
|
!had_ddash);
|
|
}
|
|
|
|
/* If we have found no command specific completions at
|
|
all, fall back to using file completions.
|
|
*/
|
|
if (completer.empty())
|
|
do_file = true;
|
|
|
|
/* But if we are planning on loading commands, don't do file completions.
|
|
See https://github.com/fish-shell/fish-shell/issues/378 */
|
|
if (commands_to_load != NULL && completer.has_commands_to_load())
|
|
do_file = false;
|
|
|
|
/* And if we're autosuggesting, and the token is empty, don't do file suggestions */
|
|
if (type == COMPLETE_AUTOSUGGEST && current_token_unescape.empty())
|
|
do_file = false;
|
|
|
|
/*
|
|
This function wants the unescaped string
|
|
*/
|
|
completer.complete_param_expand(current_token, do_file);
|
|
}
|
|
}
|
|
|
|
comps = completer.get_completions();
|
|
completer.get_commands_to_load(commands_to_load);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
Print the GNU longopt style switch \c opt, and the argument \c
|
|
argument to the specified stringbuffer, but only if arguemnt is
|
|
non-null and longer than 0 characters.
|
|
*/
|
|
static void append_switch(wcstring &out,
|
|
const wcstring &opt,
|
|
const wcstring &argument)
|
|
{
|
|
if (argument.empty())
|
|
return;
|
|
|
|
wcstring esc = escape_string(argument, 1);
|
|
append_format(out, L" --%ls %ls", opt.c_str(), esc.c_str());
|
|
}
|
|
|
|
void complete_print(wcstring &out)
|
|
{
|
|
scoped_lock locker(completion_lock);
|
|
scoped_lock locker2(completion_entry_lock);
|
|
|
|
// Get a list of all completions in a vector, then sort it by order
|
|
std::vector<const completion_entry_t *> all_completions(completion_set.begin(), completion_set.end());
|
|
sort(all_completions.begin(), all_completions.end(), compare_completions_by_order);
|
|
|
|
for (std::vector<const completion_entry_t *>::const_iterator iter = all_completions.begin(); iter != all_completions.end(); ++iter)
|
|
{
|
|
const completion_entry_t *e = *iter;
|
|
const option_list_t options = e->get_options();
|
|
for (option_list_t::const_iterator oiter = options.begin(); oiter != options.end(); ++oiter)
|
|
{
|
|
const complete_entry_opt_t *o = &*oiter;
|
|
const wchar_t *modestr[] =
|
|
{
|
|
L"",
|
|
L" --no-files",
|
|
L" --require-parameter",
|
|
L" --exclusive"
|
|
}
|
|
;
|
|
|
|
append_format(out,
|
|
L"complete%ls",
|
|
modestr[o->result_mode]);
|
|
|
|
append_switch(out,
|
|
e->cmd_is_path ? L"path" : L"command",
|
|
e->cmd);
|
|
|
|
|
|
if (o->short_opt != 0)
|
|
{
|
|
append_format(out,
|
|
L" --short-option '%lc'",
|
|
o->short_opt);
|
|
}
|
|
|
|
|
|
append_switch(out,
|
|
o->old_mode?L"old-option":L"long-option",
|
|
o->long_opt);
|
|
|
|
append_switch(out,
|
|
L"description",
|
|
C_(o->desc.c_str()));
|
|
|
|
append_switch(out,
|
|
L"arguments",
|
|
o->comp);
|
|
|
|
append_switch(out,
|
|
L"condition",
|
|
o->condition);
|
|
|
|
out.append(L"\n");
|
|
}
|
|
}
|
|
}
|