868
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1 /* |
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2 * help.c -- Help command |
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3 * |
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4 * Copyright (C) 2006 Mikael Berthe <bmikael@lists.lilotux.net> |
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5 * |
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6 * This program is free software; you can redistribute it and/or modify |
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7 * it under the terms of the GNU General Public License as published by |
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8 * the Free Software Foundation; either version 2 of the License, or (at |
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9 * your option) any later version. |
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10 * |
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11 * This program is distributed in the hope that it will be useful, but |
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 * General Public License for more details. |
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15 * |
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16 * You should have received a copy of the GNU General Public License |
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17 * along with this program; if not, write to the Free Software |
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18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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19 * USA |
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20 */ |
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21 |
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22 #include <stdio.h> |
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23 #include <stdlib.h> |
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24 #include <string.h> |
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25 #include <ctype.h> |
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26 #include <glib.h> |
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27 |
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28 #include "settings.h" |
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29 #include "logprint.h" |
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30 #include "utils.h" |
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31 |
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32 #define DEFAULT_LANG "en" |
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33 |
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34 // get_lang() |
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35 // Return the language code string (a 2-letters string). |
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36 static const char *get_lang(void) { |
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37 static const char *lang_str = DEFAULT_LANG; |
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38 #ifdef DATA_DIR |
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39 static char lang[3]; |
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40 const char *opt_l; |
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41 opt_l = settings_opt_get("lang"); |
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42 if (opt_l && strlen(opt_l) == 2 && isalpha(opt_l[0]) && isalpha(opt_l[1])) { |
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43 strncpy(lang, opt_l, sizeof(lang)); |
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44 mc_strtolower(lang); |
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45 lang_str = lang; |
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46 } |
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47 #endif /* DATA_DIR */ |
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48 return lang_str; |
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49 } |
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50 |
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51 // help_process(string) |
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52 // Display help about the "string" command. |
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53 // If string is null, display general help. |
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54 // Return 0 in case of success. |
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55 int help_process(char *string) |
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56 { |
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57 #ifndef DATA_DIR |
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58 scr_LogPrint(LPRINT_NORMAL, "Help isn't available."); |
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59 return -1; |
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60 #else |
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61 const char *lang; |
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62 FILE *fp; |
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63 char *helpfiles_dir, *filename; |
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64 char *data; |
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65 const int datasize = 4096; |
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66 char *p; |
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67 |
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68 // Check string is ok |
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69 for (p = string; p && *p; p++) { |
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70 if (!isalnum(*p) && *p != '_' && *p != '-') { |
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71 scr_LogPrint(LPRINT_NORMAL, "Cannot find help (invalid keyword)."); |
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72 return 1; |
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73 } |
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74 } |
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75 |
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76 // Look for help file |
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77 lang = get_lang(); |
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78 helpfiles_dir = g_strdup_printf("%s/mcabber/help", DATA_DIR); |
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79 if (string && *string) { |
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80 p = g_strdup(string); |
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81 mc_strtolower(p); |
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82 filename = g_strdup_printf("%s/%s/hlp_%s.txt", helpfiles_dir, lang, p); |
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83 g_free(p); |
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84 } else |
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85 filename = g_strdup_printf("%s/%s/hlp.txt", helpfiles_dir, lang); |
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86 |
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87 fp = fopen(filename, "r"); |
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88 g_free(filename); |
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89 g_free(helpfiles_dir); |
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90 |
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91 if (!fp) { |
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92 scr_LogPrint(LPRINT_NORMAL, "No help found."); |
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93 return -1; |
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94 } |
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95 |
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96 data = g_new(char, datasize); |
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97 while (!feof(fp)) { |
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98 if (fgets(data, datasize, fp) == NULL) break; |
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99 // Strip trailing newline |
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100 for (p = data; *p; p++) ; |
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101 if (p > data) |
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102 p--; |
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103 if (*p == '\n' || *p == '\r') |
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104 *p = '\0'; |
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105 // Displaty the help line |
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106 scr_LogPrint(LPRINT_NORMAL, "%s", data); |
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107 } |
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108 fclose(fp); |
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109 g_free(data); |
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110 |
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111 return 0; |
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112 #endif /* DATA_DIR */ |
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113 } |
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114 |
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115 |
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116 /* vim: set expandtab cindent cinoptions=>2\:2(0: For Vim users... */ |