mirror of
https://github.com/fish-shell/fish-shell.git
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632 lines
17 KiB
C++
632 lines
17 KiB
C++
/** \file builtin_complete.c Functions defining the complete builtin
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Functions used for implementing the complete builtin.
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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 <wchar.h>
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#include <wctype.h>
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#include <sys/types.h>
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#include <termios.h>
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#include <signal.h>
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#include "fallback.h"
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#include "util.h"
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#include "wutil.h"
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#include "builtin.h"
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#include "common.h"
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#include "complete.h"
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#include "wgetopt.h"
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#include "parser.h"
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#include "reader.h"
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/**
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Internal storage for the builtin_complete_get_temporary_buffer() function.
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*/
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static const wchar_t *temporary_buffer;
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/*
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builtin_complete_* are a set of rather silly looping functions that
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make sure that all the proper combinations of complete_add or
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complete_remove get called. This is needed since complete allows you
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to specify multiple switches on a single commandline, like 'complete
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-s a -s b -s c', but the complete_add function only accepts one
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short switch and one long switch.
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*/
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/**
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Silly function
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*/
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static void builtin_complete_add2(const wchar_t *cmd,
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int cmd_type,
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const wchar_t *short_opt,
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const wcstring_list_t &gnu_opt,
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const wcstring_list_t &old_opt,
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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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int flags)
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{
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size_t i;
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const wchar_t *s;
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for (s=short_opt; *s; s++)
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{
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complete_add(cmd,
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cmd_type,
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*s,
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0,
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0,
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result_mode,
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condition,
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comp,
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desc,
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flags);
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}
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for (i=0; i<gnu_opt.size(); i++)
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{
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complete_add(cmd,
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cmd_type,
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0,
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gnu_opt.at(i).c_str(),
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0,
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result_mode,
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condition,
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comp,
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desc,
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flags);
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}
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for (i=0; i<old_opt.size(); i++)
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{
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complete_add(cmd,
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cmd_type,
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0,
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old_opt.at(i).c_str(),
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1,
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result_mode,
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condition,
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comp,
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desc,
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flags);
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}
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if (old_opt.empty() && gnu_opt.empty() && wcslen(short_opt) == 0)
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{
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complete_add(cmd,
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cmd_type,
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0,
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0,
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0,
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result_mode,
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condition,
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comp,
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desc,
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flags);
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}
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}
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/**
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Silly function
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*/
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static void builtin_complete_add(const wcstring_list_t &cmd,
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const wcstring_list_t &path,
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const wchar_t *short_opt,
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wcstring_list_t &gnu_opt,
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wcstring_list_t &old_opt,
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int result_mode,
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int authoritative,
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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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int flags)
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{
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for (size_t i=0; i<cmd.size(); i++)
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{
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builtin_complete_add2(cmd.at(i).c_str(),
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COMMAND,
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short_opt,
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gnu_opt,
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old_opt,
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result_mode,
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condition,
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comp,
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desc,
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flags);
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if (authoritative != -1)
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{
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complete_set_authoritative(cmd.at(i).c_str(),
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COMMAND,
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authoritative);
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}
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}
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for (size_t i=0; i<path.size(); i++)
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{
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builtin_complete_add2(path.at(i).c_str(),
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PATH,
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short_opt,
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gnu_opt,
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old_opt,
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result_mode,
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condition,
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comp,
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desc,
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flags);
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if (authoritative != -1)
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{
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complete_set_authoritative(path.at(i).c_str(),
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PATH,
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authoritative);
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}
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}
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}
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/**
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Silly function
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*/
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static void builtin_complete_remove3(const wchar_t *cmd,
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int cmd_type,
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wchar_t short_opt,
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const wcstring_list_t &long_opt)
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{
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for (size_t i=0; i<long_opt.size(); i++)
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{
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complete_remove(cmd,
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cmd_type,
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short_opt,
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long_opt.at(i).c_str());
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}
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}
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/**
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Silly function
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*/
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static void builtin_complete_remove2(const wchar_t *cmd,
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int cmd_type,
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const wchar_t *short_opt,
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const wcstring_list_t &gnu_opt,
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const wcstring_list_t &old_opt)
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{
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const wchar_t *s = (wchar_t *)short_opt;
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if (*s)
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{
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for (; *s; s++)
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{
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if (old_opt.empty() && gnu_opt.empty())
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{
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complete_remove(cmd,
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cmd_type,
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*s,
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0);
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}
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else
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{
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builtin_complete_remove3(cmd,
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cmd_type,
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*s,
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gnu_opt);
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builtin_complete_remove3(cmd,
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cmd_type,
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*s,
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old_opt);
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}
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}
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}
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else
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{
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builtin_complete_remove3(cmd,
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cmd_type,
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0,
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gnu_opt);
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builtin_complete_remove3(cmd,
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cmd_type,
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0,
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old_opt);
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}
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}
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/**
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Silly function
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*/
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static void builtin_complete_remove(const wcstring_list_t &cmd,
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const wcstring_list_t &path,
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const wchar_t *short_opt,
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const wcstring_list_t &gnu_opt,
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const wcstring_list_t &old_opt)
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{
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for (size_t i=0; i<cmd.size(); i++)
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{
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builtin_complete_remove2(cmd.at(i).c_str(),
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COMMAND,
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short_opt,
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gnu_opt,
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old_opt);
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}
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for (size_t i=0; i<path.size(); i++)
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{
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builtin_complete_remove2(path.at(i).c_str(),
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PATH,
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short_opt,
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gnu_opt,
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old_opt);
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}
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}
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const wchar_t *builtin_complete_get_temporary_buffer()
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{
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ASSERT_IS_MAIN_THREAD();
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return temporary_buffer;
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}
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/**
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The complete builtin. Used for specifying programmable
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tab-completions. Calls the functions in complete.c for any heavy
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lifting. Defined in builtin_complete.c
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*/
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static int builtin_complete(parser_t &parser, wchar_t **argv)
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{
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ASSERT_IS_MAIN_THREAD();
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bool res=false;
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int argc=0;
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int result_mode=SHARED;
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int remove = 0;
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int authoritative = -1;
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wcstring short_opt;
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wcstring_list_t gnu_opt, old_opt;
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const wchar_t *comp=L"", *desc=L"", *condition=L"";
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bool do_complete = false;
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wcstring do_complete_param;
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wcstring_list_t cmd;
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wcstring_list_t path;
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static int recursion_level=0;
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argc = builtin_count_args(argv);
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woptind=0;
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while (! res)
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{
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static const struct woption
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long_options[] =
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{
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{
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L"exclusive", no_argument, 0, 'x'
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}
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,
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{
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L"no-files", no_argument, 0, 'f'
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}
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,
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{
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L"require-parameter", no_argument, 0, 'r'
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}
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,
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{
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L"path", required_argument, 0, 'p'
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}
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,
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{
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L"command", required_argument, 0, 'c'
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}
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,
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{
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L"short-option", required_argument, 0, 's'
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}
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,
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{
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L"long-option", required_argument, 0, 'l'
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}
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,
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{
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L"old-option", required_argument, 0, 'o'
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}
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,
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{
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L"description", required_argument, 0, 'd'
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}
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,
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{
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L"arguments", required_argument, 0, 'a'
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}
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,
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{
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L"erase", no_argument, 0, 'e'
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}
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,
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{
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L"unauthoritative", no_argument, 0, 'u'
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}
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,
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{
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L"authoritative", no_argument, 0, 'A'
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}
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,
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{
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L"condition", required_argument, 0, 'n'
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}
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,
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{
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L"do-complete", optional_argument, 0, 'C'
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}
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,
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{
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L"help", no_argument, 0, 'h'
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}
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,
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{
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0, 0, 0, 0
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}
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}
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;
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int opt_index = 0;
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int opt = wgetopt_long(argc,
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argv,
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L"a:c:p:s:l:o:d:frxeuAn:C::h",
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long_options,
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&opt_index);
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if (opt == -1)
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break;
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switch (opt)
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{
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case 0:
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if (long_options[opt_index].flag != 0)
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break;
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append_format(stderr_buffer,
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BUILTIN_ERR_UNKNOWN,
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argv[0],
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long_options[opt_index].name);
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builtin_print_help(parser, argv[0], stderr_buffer);
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res = true;
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break;
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case 'x':
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result_mode |= EXCLUSIVE;
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break;
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case 'f':
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result_mode |= NO_FILES;
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break;
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case 'r':
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result_mode |= NO_COMMON;
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break;
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case 'p':
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case 'c':
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{
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wcstring tmp;
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if (unescape_string(woptarg, &tmp, UNESCAPE_SPECIAL))
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{
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if (opt=='p')
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path.push_back(tmp);
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else
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cmd.push_back(tmp);
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}
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else
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{
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append_format(stderr_buffer, L"%ls: Invalid token '%ls'\n", argv[0], woptarg);
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res = true;
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}
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break;
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}
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case 'd':
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desc = woptarg;
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break;
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case 'u':
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authoritative=0;
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break;
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case 'A':
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authoritative=1;
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break;
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case 's':
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short_opt.append(woptarg);
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break;
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case 'l':
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gnu_opt.push_back(woptarg);
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break;
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case 'o':
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old_opt.push_back(woptarg);
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break;
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case 'a':
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comp = woptarg;
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break;
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case 'e':
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remove = 1;
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break;
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case 'n':
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condition = woptarg;
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break;
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case 'C':
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do_complete = true;
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do_complete_param = woptarg ? woptarg : reader_get_buffer();
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break;
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case 'h':
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builtin_print_help(parser, argv[0], stdout_buffer);
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return 0;
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case '?':
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builtin_unknown_option(parser, argv[0], argv[woptind-1]);
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res = true;
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break;
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}
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}
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if (!res)
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{
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if (condition && wcslen(condition))
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{
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const wcstring condition_string = condition;
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parse_error_list_t errors;
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if (parse_util_detect_errors(condition_string, &errors))
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{
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append_format(stderr_buffer,
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L"%ls: Condition '%ls' contained a syntax error",
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argv[0],
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condition);
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for (size_t i=0; i < errors.size(); i++)
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{
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append_format(stderr_buffer, L"\n%s: ", argv[0]);
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stderr_buffer.append(errors.at(i).describe(condition_string));
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}
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res = true;
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}
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}
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}
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if (!res)
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{
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if (comp && wcslen(comp))
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{
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if (parser.test_args(comp, 0, 0))
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{
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append_format(stderr_buffer,
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L"%ls: Completion '%ls' contained a syntax error\n",
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argv[0],
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comp);
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parser.test_args(comp, &stderr_buffer, argv[0]);
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res = true;
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}
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}
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}
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if (!res)
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{
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if (do_complete)
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{
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const wchar_t *token;
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parse_util_token_extent(do_complete_param.c_str(), do_complete_param.size(), &token, 0, 0, 0);
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const wchar_t *prev_temporary_buffer = temporary_buffer;
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temporary_buffer = do_complete_param.c_str();
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if (recursion_level < 1)
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{
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recursion_level++;
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std::vector<completion_t> comp;
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complete(do_complete_param, comp, COMPLETION_REQUEST_DEFAULT);
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for (size_t i=0; i< comp.size() ; i++)
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{
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const completion_t &next = comp.at(i);
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const wchar_t *prepend;
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if (next.flags & COMPLETE_REPLACES_TOKEN)
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{
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prepend = L"";
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}
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else
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{
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prepend = token;
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}
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if (!(next.description).empty())
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{
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append_format(stdout_buffer, L"%ls%ls\t%ls\n", prepend, next.completion.c_str(), next.description.c_str());
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}
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else
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{
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append_format(stdout_buffer, L"%ls%ls\n", prepend, next.completion.c_str());
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}
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}
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recursion_level--;
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}
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temporary_buffer = prev_temporary_buffer;
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}
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else if (woptind != argc)
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{
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append_format(stderr_buffer,
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_(L"%ls: Too many arguments\n"),
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argv[0]);
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builtin_print_help(parser, argv[0], stderr_buffer);
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res = true;
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}
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else if (cmd.empty() && path.empty())
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{
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/* No arguments specified, meaning we print the definitions of
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* all specified completions to stdout.*/
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complete_print(stdout_buffer);
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}
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else
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{
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int flags = COMPLETE_AUTO_SPACE;
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if (remove)
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{
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builtin_complete_remove(cmd,
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path,
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short_opt.c_str(),
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gnu_opt,
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old_opt);
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}
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else
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{
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builtin_complete_add(cmd,
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path,
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short_opt.c_str(),
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gnu_opt,
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old_opt,
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result_mode,
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authoritative,
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condition,
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comp,
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desc,
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flags);
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}
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}
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}
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return res ? 1 : 0;
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}
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