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5598
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1 /* Shell quoting. |
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2 Copyright (C) 2001-2004 Free Software Foundation, Inc. |
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3 Written by Bruno Haible <haible@clisp.cons.org>, 2001. |
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4 |
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5 This program is free software; you can redistribute it and/or modify |
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6 it under the terms of the GNU General Public License as published by |
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7 the Free Software Foundation; either version 2, or (at your option) |
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8 any later version. |
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9 |
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10 This program is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 GNU General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU General Public License |
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16 along with this program; if not, write to the Free Software Foundation, |
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17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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18 |
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19 #ifdef HAVE_CONFIG_H |
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20 # include <config.h> |
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21 #endif |
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22 |
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23 /* Specification. */ |
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24 #include "sh-quote.h" |
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25 |
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26 #include <string.h> |
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27 |
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28 #include "quotearg.h" |
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29 #include "xalloc.h" |
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30 |
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31 /* Describes quoting for sh compatible shells. */ |
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32 static struct quoting_options *sh_quoting_options; |
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33 |
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34 /* Initializes the sh_quoting_options variable. */ |
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35 static void |
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36 init_sh_quoting_options () |
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37 { |
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38 sh_quoting_options = clone_quoting_options (NULL); |
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39 set_quoting_style (sh_quoting_options, shell_quoting_style); |
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40 } |
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41 |
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42 /* Returns the number of bytes needed for the quoted string. */ |
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43 size_t |
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44 shell_quote_length (const char *string) |
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45 { |
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46 if (sh_quoting_options == NULL) |
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47 init_sh_quoting_options (); |
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48 return quotearg_buffer (NULL, 0, string, strlen (string), |
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49 sh_quoting_options); |
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50 } |
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51 |
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52 /* Copies the quoted string to p and returns the incremented p. |
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53 There must be room for shell_quote_length (string) + 1 bytes at p. */ |
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54 char * |
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55 shell_quote_copy (char *p, const char *string) |
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56 { |
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57 if (sh_quoting_options == NULL) |
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58 init_sh_quoting_options (); |
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59 return p + quotearg_buffer (p, (size_t)(-1), string, strlen (string), |
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60 sh_quoting_options); |
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61 } |
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62 |
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63 /* Returns the freshly allocated quoted string. */ |
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64 char * |
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65 shell_quote (const char *string) |
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66 { |
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67 if (sh_quoting_options == NULL) |
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68 init_sh_quoting_options (); |
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69 return quotearg_alloc (string, strlen (string), sh_quoting_options); |
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70 } |
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71 |
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72 /* Returns a freshly allocated string containing all argument strings, quoted, |
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73 separated through spaces. */ |
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74 char * |
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75 shell_quote_argv (char **argv) |
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76 { |
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77 if (*argv != NULL) |
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78 { |
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79 char **argp; |
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80 size_t length; |
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81 char *command; |
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82 char *p; |
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83 |
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84 length = 0; |
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85 for (argp = argv; ; ) |
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86 { |
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87 length += shell_quote_length (*argp) + 1; |
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88 argp++; |
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89 if (*argp == NULL) |
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90 break; |
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91 } |
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92 |
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93 command = (char *) xmalloc (length); |
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94 |
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95 p = command; |
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96 for (argp = argv; ; ) |
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97 { |
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98 p = shell_quote_copy (p, *argp); |
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99 argp++; |
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100 if (*argp == NULL) |
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101 break; |
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102 *p++ = ' '; |
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103 } |
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104 *p = '\0'; |
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105 |
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106 return command; |
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107 } |
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108 else |
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109 return xstrdup (""); |
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110 } |
