| 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */ |
| 2 | |
| 3 | /* (C) 1998 Red Hat Software, Inc. -- Licensing details are in the COPYING |
| 4 | file accompanying popt source distributions, available from |
| 5 | ftp://ftp.redhat.com/pub/code/popt */ |
| 6 | |
| 7 | #include "system.h" |
| 8 | #include "poptint.h" |
| 9 | |
| 10 | static void displayArgs(poptContext con, |
| 11 | /*@unused@*/ enum poptCallbackReason foo, |
| 12 | struct poptOption * key, |
| 13 | /*@unused@*/ const char * arg, /*@unused@*/ void * data) { |
| 14 | if (key->shortName== '?') |
| 15 | poptPrintHelp(con, stdout, 0); |
| 16 | else |
| 17 | poptPrintUsage(con, stdout, 0); |
| 18 | exit(0); |
| 19 | } |
| 20 | |
| 21 | struct poptOption poptHelpOptions[] = { |
| 22 | { NULL, '\0', POPT_ARG_CALLBACK, (void *)&displayArgs, '\0', NULL, NULL }, |
| 23 | { "help", '?', 0, NULL, '?', N_("Show this help message"), NULL }, |
| 24 | { "usage", '\0', 0, NULL, 'u', N_("Display brief usage message"), NULL }, |
| 25 | { NULL, '\0', 0, NULL, 0, NULL, NULL } |
| 26 | } ; |
| 27 | |
| 28 | |
| 29 | /*@observer@*/ /*@null@*/ static const char *const |
| 30 | getTableTranslationDomain(const struct poptOption *table) |
| 31 | { |
| 32 | const struct poptOption *opt; |
| 33 | |
| 34 | for(opt = table; |
| 35 | opt->longName || opt->shortName || opt->arg; |
| 36 | opt++) { |
| 37 | if(opt->argInfo == POPT_ARG_INTL_DOMAIN) |
| 38 | return opt->arg; |
| 39 | } |
| 40 | |
| 41 | return NULL; |
| 42 | } |
| 43 | |
| 44 | /*@observer@*/ /*@null@*/ static const char *const |
| 45 | getArgDescrip(const struct poptOption * opt, const char *translation_domain) |
| 46 | { |
| 47 | if (!(opt->argInfo & POPT_ARG_MASK)) return NULL; |
| 48 | |
| 49 | if (opt == (poptHelpOptions + 1) || opt == (poptHelpOptions + 2)) |
| 50 | if (opt->argDescrip) return POPT_(opt->argDescrip); |
| 51 | |
| 52 | if (opt->argDescrip) return D_(translation_domain, opt->argDescrip); |
| 53 | return POPT_("ARG"); |
| 54 | } |
| 55 | |
| 56 | static void singleOptionHelp(FILE * f, int maxLeftCol, |
| 57 | const struct poptOption * opt, |
| 58 | const char *translation_domain) { |
| 59 | int indentLength = maxLeftCol + 5; |
| 60 | int lineLength = 79 - indentLength; |
| 61 | const char * help = D_(translation_domain, opt->descrip); |
| 62 | int helpLength; |
| 63 | const char * ch; |
| 64 | char format[10]; |
| 65 | char * left; |
| 66 | const char * argDescrip = getArgDescrip(opt, translation_domain); |
| 67 | |
| 68 | left = malloc(maxLeftCol + 1); |
| 69 | *left = '\0'; |
| 70 | |
| 71 | if (opt->longName && opt->shortName) |
| 72 | sprintf(left, "-%c, --%s", opt->shortName, opt->longName); |
| 73 | else if (opt->shortName) |
| 74 | sprintf(left, "-%c", opt->shortName); |
| 75 | else if (opt->longName) |
| 76 | sprintf(left, "--%s", opt->longName); |
| 77 | if (!*left) return ; |
| 78 | if (argDescrip) { |
| 79 | strcat(left, "="); |
| 80 | strcat(left, argDescrip); |
| 81 | } |
| 82 | |
| 83 | if (help) |
| 84 | fprintf(f," %-*s ", maxLeftCol, left); |
| 85 | else { |
| 86 | fprintf(f," %s\n", left); |
| 87 | goto out; |
| 88 | } |
| 89 | |
| 90 | helpLength = strlen(help); |
| 91 | while (helpLength > lineLength) { |
| 92 | ch = help + lineLength - 1; |
| 93 | while (ch > help && !isspace(*ch)) ch--; |
| 94 | if (ch == help) break; /* give up */ |
| 95 | while (ch > (help + 1) && isspace(*ch)) ch--; |
| 96 | ch++; |
| 97 | |
| 98 | sprintf(format, "%%.%ds\n%%%ds", (int) (ch - help), indentLength); |
| 99 | fprintf(f, format, help, " "); |
| 100 | help = ch; |
| 101 | while (isspace(*help) && *help) help++; |
| 102 | helpLength = strlen(help); |
| 103 | } |
| 104 | |
| 105 | if (helpLength) fprintf(f, "%s\n", help); |
| 106 | |
| 107 | out: |
| 108 | free(left); |
| 109 | } |
| 110 | |
| 111 | static int maxArgWidth(const struct poptOption * opt, |
| 112 | const char * translation_domain) { |
| 113 | int max = 0; |
| 114 | int this; |
| 115 | const char * s; |
| 116 | |
| 117 | while (opt->longName || opt->shortName || opt->arg) { |
| 118 | if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) { |
| 119 | this = maxArgWidth(opt->arg, translation_domain); |
| 120 | if (this > max) max = this; |
| 121 | } else if (!(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN)) { |
| 122 | this = opt->shortName ? 2 : 0; |
| 123 | if (opt->longName) { |
| 124 | if (this) this += 2; |
| 125 | this += strlen(opt->longName) + 2; |
| 126 | } |
| 127 | |
| 128 | s = getArgDescrip(opt, translation_domain); |
| 129 | if (s) |
| 130 | this += strlen(s) + 1; |
| 131 | if (this > max) max = this; |
| 132 | } |
| 133 | |
| 134 | opt++; |
| 135 | } |
| 136 | |
| 137 | return max; |
| 138 | } |
| 139 | |
| 140 | static void singleTableHelp(FILE * f, const struct poptOption * table, |
| 141 | int left, |
| 142 | const char *translation_domain) { |
| 143 | const struct poptOption * opt; |
| 144 | const char *sub_transdom; |
| 145 | |
| 146 | opt = table; |
| 147 | while (opt->longName || opt->shortName || opt->arg) { |
| 148 | if ((opt->longName || opt->shortName) && |
| 149 | !(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN)) |
| 150 | singleOptionHelp(f, left, opt, translation_domain); |
| 151 | opt++; |
| 152 | } |
| 153 | |
| 154 | opt = table; |
| 155 | while (opt->longName || opt->shortName || opt->arg) { |
| 156 | if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) { |
| 157 | sub_transdom = getTableTranslationDomain(opt->arg); |
| 158 | if(!sub_transdom) |
| 159 | sub_transdom = translation_domain; |
| 160 | |
| 161 | if (opt->descrip) |
| 162 | fprintf(f, "\n%s\n", D_(sub_transdom, opt->descrip)); |
| 163 | |
| 164 | singleTableHelp(f, opt->arg, left, sub_transdom); |
| 165 | } |
| 166 | opt++; |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | static int showHelpIntro(poptContext con, FILE * f) { |
| 171 | int len = 6; |
| 172 | const char * fn; |
| 173 | |
| 174 | fprintf(f, POPT_("Usage:")); |
| 175 | if (!(con->flags & POPT_CONTEXT_KEEP_FIRST)) { |
| 176 | fn = con->optionStack->argv[0]; |
| 177 | if (strchr(fn, '/')) fn = strchr(fn, '/') + 1; |
| 178 | fprintf(f, " %s", fn); |
| 179 | len += strlen(fn) + 1; |
| 180 | } |
| 181 | |
| 182 | return len; |
| 183 | } |
| 184 | |
| 185 | void poptPrintHelp(poptContext con, FILE * f, /*@unused@*/ int flags) { |
| 186 | int leftColWidth; |
| 187 | |
| 188 | showHelpIntro(con, f); |
| 189 | if (con->otherHelp) |
| 190 | fprintf(f, " %s\n", con->otherHelp); |
| 191 | else |
| 192 | fprintf(f, " %s\n", POPT_("[OPTION...]")); |
| 193 | |
| 194 | leftColWidth = maxArgWidth(con->options, NULL); |
| 195 | singleTableHelp(f, con->options, leftColWidth, NULL); |
| 196 | } |
| 197 | |
| 198 | static int singleOptionUsage(FILE * f, int cursor, |
| 199 | const struct poptOption * opt, |
| 200 | const char *translation_domain) { |
| 201 | int len = 3; |
| 202 | char shortStr[2] = { '\0', '\0' }; |
| 203 | const char * item = shortStr; |
| 204 | const char * argDescrip = getArgDescrip(opt, translation_domain); |
| 205 | |
| 206 | if (opt->shortName) { |
| 207 | if (!(opt->argInfo & POPT_ARG_MASK)) |
| 208 | return cursor; /* we did these already */ |
| 209 | len++; |
| 210 | *shortStr = opt->shortName; |
| 211 | shortStr[1] = '\0'; |
| 212 | } else if (opt->longName) { |
| 213 | len += 1 + strlen(opt->longName); |
| 214 | item = opt->longName; |
| 215 | } |
| 216 | |
| 217 | if (len == 3) return cursor; |
| 218 | |
| 219 | if (argDescrip) |
| 220 | len += strlen(argDescrip) + 1; |
| 221 | |
| 222 | if ((cursor + len) > 79) { |
| 223 | fprintf(f, "\n "); |
| 224 | cursor = 7; |
| 225 | } |
| 226 | |
| 227 | fprintf(f, " [-%s%s%s%s]", opt->shortName ? "" : "-", item, |
| 228 | argDescrip ? (opt->shortName ? " " : "=") : "", |
| 229 | argDescrip ? argDescrip : ""); |
| 230 | |
| 231 | return cursor + len + 1; |
| 232 | } |
| 233 | |
| 234 | static int singleTableUsage(FILE * f, int cursor, const struct poptOption * table, |
| 235 | const char *translation_domain) { |
| 236 | const struct poptOption * opt; |
| 237 | |
| 238 | opt = table; |
| 239 | while (opt->longName || opt->shortName || opt->arg) { |
| 240 | if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INTL_DOMAIN) |
| 241 | translation_domain = (const char *)opt->arg; |
| 242 | else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) |
| 243 | cursor = singleTableUsage(f, cursor, opt->arg, |
| 244 | translation_domain); |
| 245 | else if ((opt->longName || opt->shortName) && |
| 246 | !(opt->argInfo & POPT_ARGFLAG_DOC_HIDDEN)) |
| 247 | cursor = singleOptionUsage(f, cursor, opt, translation_domain); |
| 248 | |
| 249 | opt++; |
| 250 | } |
| 251 | |
| 252 | return cursor; |
| 253 | } |
| 254 | |
| 255 | static int showShortOptions(const struct poptOption * opt, FILE * f, |
| 256 | char * str) { |
| 257 | char s[300]; /* this is larger then the ascii set, so |
| 258 | it should do just fine */ |
| 259 | |
| 260 | s[0] = '\0'; |
| 261 | if (str == NULL) { |
| 262 | memset(s, 0, sizeof(s)); |
| 263 | str = s; |
| 264 | } |
| 265 | |
| 266 | while (opt->longName || opt->shortName || opt->arg) { |
| 267 | if (opt->shortName && !(opt->argInfo & POPT_ARG_MASK)) |
| 268 | str[strlen(str)] = opt->shortName; |
| 269 | else if ((opt->argInfo & POPT_ARG_MASK) == POPT_ARG_INCLUDE_TABLE) |
| 270 | showShortOptions(opt->arg, f, str); |
| 271 | |
| 272 | opt++; |
| 273 | } |
| 274 | |
| 275 | if (s != str || !*s) |
| 276 | return 0; |
| 277 | |
| 278 | fprintf(f, " [-%s]", s); |
| 279 | return strlen(s) + 4; |
| 280 | } |
| 281 | |
| 282 | void poptPrintUsage(poptContext con, FILE * f, /*@unused@*/ int flags) { |
| 283 | int cursor; |
| 284 | |
| 285 | cursor = showHelpIntro(con, f); |
| 286 | cursor += showShortOptions(con->options, f, NULL); |
| 287 | singleTableUsage(f, cursor, con->options, NULL); |
| 288 | |
| 289 | if (con->otherHelp) { |
| 290 | cursor += strlen(con->otherHelp) + 1; |
| 291 | if (cursor > 79) fprintf(f, "\n "); |
| 292 | fprintf(f, " %s", con->otherHelp); |
| 293 | } |
| 294 | |
| 295 | fprintf(f, "\n"); |
| 296 | } |
| 297 | |
| 298 | void poptSetOtherOptionHelp(poptContext con, const char * text) { |
| 299 | if (con->otherHelp) xfree(con->otherHelp); |
| 300 | con->otherHelp = xstrdup(text); |
| 301 | } |