1 /* quotearg.h - quote arguments for output 2 3 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 Free Software 4 Foundation, Inc. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software Foundation, 18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 19 20 /* Written by Paul Eggert <eggert (at) twinsun.com> */ 21 22 #ifndef QUOTEARG_H_ 23 # define QUOTEARG_H_ 1 24 25 # include <stddef.h> 26 27 /* Basic quoting styles. */ 28 enum quoting_style 29 { 30 /* Output names as-is (ls --quoting-style=literal). */ 31 literal_quoting_style, 32 33 /* Quote names for the shell if they contain shell metacharacters 34 or would cause ambiguous output (ls --quoting-style=shell). */ 35 shell_quoting_style, 36 37 /* Quote names for the shell, even if they would normally not 38 require quoting (ls --quoting-style=shell-always). */ 39 shell_always_quoting_style, 40 41 /* Quote names as for a C language string (ls --quoting-style=c). */ 42 c_quoting_style, 43 44 /* Like c_quoting_style except omit the surrounding double-quote 45 characters (ls --quoting-style=escape). */ 46 escape_quoting_style, 47 48 /* Like clocale_quoting_style, but quote `like this' instead of 49 "like this" in the default C locale (ls --quoting-style=locale). */ 50 locale_quoting_style, 51 52 /* Like c_quoting_style except use quotation marks appropriate for 53 the locale (ls --quoting-style=clocale). */ 54 clocale_quoting_style 55 }; 56 57 /* For now, --quoting-style=literal is the default, but this may change. */ 58 # ifndef DEFAULT_QUOTING_STYLE 59 # define DEFAULT_QUOTING_STYLE literal_quoting_style 60 # endif 61 62 /* Names of quoting styles and their corresponding values. */ 63 extern char const *const quoting_style_args[]; 64 extern enum quoting_style const quoting_style_vals[]; 65 66 struct quoting_options; 67 68 /* The functions listed below set and use a hidden variable 69 that contains the default quoting style options. */ 70 71 /* Allocate a new set of quoting options, with contents initially identical 72 to O if O is not null, or to the default if O is null. 73 It is the caller's responsibility to free the result. */ 74 struct quoting_options *clone_quoting_options (struct quoting_options *o); 75 76 /* Get the value of O's quoting style. If O is null, use the default. */ 77 enum quoting_style get_quoting_style (struct quoting_options *o); 78 79 /* In O (or in the default if O is null), 80 set the value of the quoting style to S. */ 81 void set_quoting_style (struct quoting_options *o, enum quoting_style s); 82 83 /* In O (or in the default if O is null), 84 set the value of the quoting options for character C to I. 85 Return the old value. Currently, the only values defined for I are 86 0 (the default) and 1 (which means to quote the character even if 87 it would not otherwise be quoted). */ 88 int set_char_quoting (struct quoting_options *o, char c, int i); 89 90 /* Place into buffer BUFFER (of size BUFFERSIZE) a quoted version of 91 argument ARG (of size ARGSIZE), using O to control quoting. 92 If O is null, use the default. 93 Terminate the output with a null character, and return the written 94 size of the output, not counting the terminating null. 95 If BUFFERSIZE is too small to store the output string, return the 96 value that would have been returned had BUFFERSIZE been large enough. 97 If ARGSIZE is -1, use the string length of the argument for ARGSIZE. */ 98 size_t quotearg_buffer (char *buffer, size_t buffersize, 99 char const *arg, size_t argsize, 100 struct quoting_options const *o); 101 102 /* Like quotearg_buffer, except return the result in a newly allocated 103 buffer. It is the caller's responsibility to free the result. */ 104 char *quotearg_alloc (char const *arg, size_t argsize, 105 struct quoting_options const *o); 106 107 /* Use storage slot N to return a quoted version of the string ARG. 108 Use the default quoting options. 109 The returned value points to static storage that can be 110 reused by the next call to this function with the same value of N. 111 N must be nonnegative. */ 112 char *quotearg_n (int n, char const *arg); 113 114 /* Equivalent to quotearg_n (0, ARG). */ 115 char *quotearg (char const *arg); 116 117 /* Use style S and storage slot N to return a quoted version of the string ARG. 118 This is like quotearg_n (N, ARG), except that it uses S with no other 119 options to specify the quoting method. */ 120 char *quotearg_n_style (int n, enum quoting_style s, char const *arg); 121 122 /* Use style S and storage slot N to return a quoted version of the 123 argument ARG of size ARGSIZE. This is like quotearg_n_style 124 (N, S, ARG), except it can quote null bytes. */ 125 char *quotearg_n_style_mem (int n, enum quoting_style s, 126 char const *arg, size_t argsize); 127 128 /* Equivalent to quotearg_n_style (0, S, ARG). */ 129 char *quotearg_style (enum quoting_style s, char const *arg); 130 131 /* Like quotearg (ARG), except also quote any instances of CH. */ 132 char *quotearg_char (char const *arg, char ch); 133 134 /* Equivalent to quotearg_char (ARG, ':'). */ 135 char *quotearg_colon (char const *arg); 136 137 #endif /* !QUOTEARG_H_ */ 138
