mirror of
https://github.com/fish-shell/fish-shell.git
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145 lines
4.8 KiB
C++
145 lines
4.8 KiB
C++
/** \file parse_util.h
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Various mostly unrelated utility functions related to parsing,
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loading and evaluating fish code.
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*/
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#ifndef FISH_PARSE_UTIL_H
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#define FISH_PARSE_UTIL_H
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#include "autoload.h"
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#include <wchar.h>
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#include <map>
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#include <set>
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/**
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Find the beginning and end of the first subshell in the specified string.
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\param in the string to search for subshells
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\param begin the starting paranthesis of the subshell
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\param end the ending paranthesis of the subshell
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\param flags set this variable to ACCEPT_INCOMPLETE if in tab_completion mode
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\return -1 on syntax error, 0 if no subshells exist and 1 on sucess
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*/
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int parse_util_locate_cmdsubst( const wchar_t *in,
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wchar_t **begin,
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wchar_t **end,
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int flags );
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/**
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Find the beginning and end of the command substitution under the
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cursor. If no subshell is found, the entire string is returned. If
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the current command substitution is not ended, i.e. the closing
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parenthesis is missing, then the string from the beginning of the
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substitution to the end of the string is returned.
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\param buff the string to search for subshells
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\param cursor_pos the position of the cursor
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\param a the start of the searched string
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\param b the end of the searched string
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*/
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void parse_util_cmdsubst_extent( const wchar_t *buff,
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int cursor_pos,
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const wchar_t **a,
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const wchar_t **b );
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/**
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Find the beginning and end of the process definition under the cursor
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\param buff the string to search for subshells
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\param cursor_pos the position of the cursor
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\param a the start of the searched string
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\param b the end of the searched string
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*/
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void parse_util_process_extent( const wchar_t *buff,
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int cursor_pos,
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const wchar_t **a,
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const wchar_t **b );
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/**
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Find the beginning and end of the job definition under the cursor
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\param buff the string to search for subshells
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\param cursor_pos the position of the cursor
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\param a the start of the searched string
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\param b the end of the searched string
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*/
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void parse_util_job_extent( const wchar_t *buff,
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int cursor_pos,
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const wchar_t **a,
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const wchar_t **b );
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/**
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Find the beginning and end of the token under the cursor and the
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token before the current token. Any combination of tok_begin,
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tok_end, prev_begin and prev_end may be null.
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\param buff the string to search for subshells
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\param cursor_pos the position of the cursor
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\param tok_begin the start of the current token
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\param tok_end the end of the current token
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\param prev_begin the start o the token before the current token
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\param prev_end the end of the token before the current token
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*/
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void parse_util_token_extent( const wchar_t *buff,
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int cursor_pos,
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const wchar_t **tok_begin,
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const wchar_t **tok_end,
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const wchar_t **prev_begin,
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const wchar_t **prev_end );
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/**
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Get the linenumber at the specified character offset
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*/
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int parse_util_lineno( const wchar_t *str, int len );
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/**
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Calculate the line number of the specified cursor position
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*/
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int parse_util_get_line_from_offset( const wcstring &str, int pos );
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/**
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Get the offset of the first character on the specified line
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*/
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int parse_util_get_offset_from_line( const wcstring &str, int line );
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/**
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Return the total offset of the buffer for the cursor position nearest to the specified poition
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*/
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int parse_util_get_offset( const wcstring &str, int line, int line_offset );
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/**
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Set the argv environment variable to the specified null-terminated
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array of strings.
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*/
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void parse_util_set_argv( const wchar_t * const *argv, const wcstring_list_t &named_arguments );
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/**
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Make a duplicate of the specified string, unescape wildcard
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characters but not performing any other character transformation.
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*/
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wchar_t *parse_util_unescape_wildcards( const wchar_t *in );
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/**
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Calculates information on the parameter at the specified index.
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\param cmd The command to be analyzed
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\param pos An index in the string which is inside the parameter
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\param quote If not NULL, store the type of quote this parameter has, can be either ', " or \\0, meaning the string is not quoted.
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\param offset If not NULL, get_param will store the offset to the beginning of the parameter.
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\param type If not NULL, get_param will store the token type as returned by tok_last.
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*/
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void parse_util_get_parameter_info( const wcstring &cmd, const size_t pos, wchar_t *quote, size_t *offset, int *type );
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/**
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Attempts to escape the string 'cmd' using the given quote type, as determined by the quote character. The quote can be a single quote or double quote, or L'\0' to indicate no quoting (and thus escaping should be with backslashes).
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*/
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wcstring parse_util_escape_string_with_quote( const wcstring &cmd, wchar_t quote);
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#endif
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