| 1 | /* |
| 2 | * main.c: command line parsing and top level |
| 3 | */ |
| 4 | |
| 5 | #include <assert.h> |
| 6 | #include <stdio.h> |
| 7 | #include <stdlib.h> |
| 8 | #include "halibut.h" |
| 9 | |
| 10 | static void dbg_prtsource(paragraph *sourceform); |
| 11 | static void dbg_prtwordlist(int level, word *w); |
| 12 | static void dbg_prtkws(keywordlist *kws); |
| 13 | |
| 14 | static const struct backend { |
| 15 | char *name; |
| 16 | void (*func)(paragraph *, keywordlist *, indexdata *); |
| 17 | int bitfield; |
| 18 | } backends[] = { |
| 19 | {"text", text_backend, 0x0001}, |
| 20 | {"xhtml", xhtml_backend, 0x0002}, |
| 21 | {"html", xhtml_backend, 0x0002}, |
| 22 | {"hlp", whlp_backend, 0x0004}, |
| 23 | {"whlp", whlp_backend, 0x0004}, |
| 24 | {"winhelp", whlp_backend, 0x0004}, |
| 25 | {"man", man_backend, 0x0008}, |
| 26 | }; |
| 27 | |
| 28 | int main(int argc, char **argv) { |
| 29 | char **infiles; |
| 30 | int nfiles; |
| 31 | int nogo; |
| 32 | int errs; |
| 33 | int reportcols; |
| 34 | int debug; |
| 35 | int backendbits; |
| 36 | int k, b; |
| 37 | |
| 38 | /* |
| 39 | * Set up initial (default) parameters. |
| 40 | */ |
| 41 | infiles = mknewa(char *, argc); |
| 42 | nfiles = 0; |
| 43 | nogo = errs = FALSE; |
| 44 | reportcols = 0; |
| 45 | debug = 0; |
| 46 | backendbits = 0; |
| 47 | |
| 48 | if (argc == 1) { |
| 49 | usage(); |
| 50 | exit(EXIT_SUCCESS); |
| 51 | } |
| 52 | |
| 53 | /* |
| 54 | * Parse command line arguments. |
| 55 | */ |
| 56 | while (--argc) { |
| 57 | char *p = *++argv; |
| 58 | if (*p == '-') { |
| 59 | /* |
| 60 | * An option. |
| 61 | */ |
| 62 | while (p && *++p) { |
| 63 | char c = *p; |
| 64 | switch (c) { |
| 65 | case '-': |
| 66 | /* |
| 67 | * Long option. |
| 68 | */ |
| 69 | { |
| 70 | char *opt, *val; |
| 71 | opt = p++; /* opt will have _one_ leading - */ |
| 72 | while (*p && *p != '=') |
| 73 | p++; /* find end of option */ |
| 74 | if (*p == '=') { |
| 75 | *p++ = '\0'; |
| 76 | val = p; |
| 77 | } else |
| 78 | val = NULL; |
| 79 | |
| 80 | assert(opt[0] == '-'); |
| 81 | for (k = 0; k < (int)lenof(backends); k++) |
| 82 | if (!strcmp(opt+1, backends[k].name)) { |
| 83 | backendbits |= backends[k].bitfield; |
| 84 | break; |
| 85 | } |
| 86 | if (k < (int)lenof(backends)) { |
| 87 | /* do nothing */; |
| 88 | } else if (!strcmp(opt, "-help")) { |
| 89 | help(); |
| 90 | nogo = TRUE; |
| 91 | } else if (!strcmp(opt, "-version")) { |
| 92 | showversion(); |
| 93 | nogo = TRUE; |
| 94 | } else if (!strcmp(opt, "-licence") || |
| 95 | !strcmp(opt, "-license")) { |
| 96 | licence(); |
| 97 | nogo = TRUE; |
| 98 | } else if (!strcmp(opt, "-precise")) { |
| 99 | reportcols = 1; |
| 100 | } else { |
| 101 | errs = TRUE, error(err_nosuchopt, opt); |
| 102 | } |
| 103 | } |
| 104 | p = NULL; |
| 105 | break; |
| 106 | case 'h': |
| 107 | case 'V': |
| 108 | case 'L': |
| 109 | case 'P': |
| 110 | case 'd': |
| 111 | /* |
| 112 | * Option requiring no parameter. |
| 113 | */ |
| 114 | switch (c) { |
| 115 | case 'h': |
| 116 | help(); |
| 117 | nogo = TRUE; |
| 118 | break; |
| 119 | case 'V': |
| 120 | showversion(); |
| 121 | nogo = TRUE; |
| 122 | break; |
| 123 | case 'L': |
| 124 | licence(); |
| 125 | nogo = TRUE; |
| 126 | break; |
| 127 | case 'P': |
| 128 | reportcols = 1; |
| 129 | break; |
| 130 | case 'd': |
| 131 | debug = TRUE; |
| 132 | break; |
| 133 | } |
| 134 | break; |
| 135 | #if 0 |
| 136 | case 'o': |
| 137 | /* |
| 138 | * Option requiring parameter. |
| 139 | */ |
| 140 | p++; |
| 141 | if (!*p && argc > 1) |
| 142 | --argc, p = *++argv; |
| 143 | else if (!*p) { |
| 144 | char opt[2]; |
| 145 | opt[0] = c; |
| 146 | opt[1] = '\0'; |
| 147 | errs = TRUE, error(err_optnoarg, opt); |
| 148 | } |
| 149 | /* |
| 150 | * Now c is the option and p is the parameter. |
| 151 | */ |
| 152 | switch (c) { |
| 153 | case 'o': |
| 154 | outfile = p; |
| 155 | break; |
| 156 | } |
| 157 | p = NULL; /* prevent continued processing */ |
| 158 | break; |
| 159 | #endif |
| 160 | default: |
| 161 | /* |
| 162 | * Unrecognised option. |
| 163 | */ |
| 164 | { |
| 165 | char opt[2]; |
| 166 | opt[0] = c; |
| 167 | opt[1] = '\0'; |
| 168 | errs = TRUE, error(err_nosuchopt, opt); |
| 169 | } |
| 170 | } |
| 171 | } |
| 172 | } else { |
| 173 | /* |
| 174 | * A non-option argument. |
| 175 | */ |
| 176 | infiles[nfiles++] = p; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | if (errs) |
| 181 | exit(EXIT_FAILURE); |
| 182 | if (nogo) |
| 183 | exit(EXIT_SUCCESS); |
| 184 | |
| 185 | /* |
| 186 | * Do the work. |
| 187 | */ |
| 188 | if (nfiles == 0) { |
| 189 | error(err_noinput); |
| 190 | usage(); |
| 191 | exit(EXIT_FAILURE); |
| 192 | } |
| 193 | |
| 194 | { |
| 195 | input in; |
| 196 | paragraph *sourceform, *p; |
| 197 | indexdata *idx; |
| 198 | keywordlist *keywords; |
| 199 | |
| 200 | in.filenames = infiles; |
| 201 | in.nfiles = nfiles; |
| 202 | in.currfp = NULL; |
| 203 | in.currindex = 0; |
| 204 | in.npushback = in.pushbacksize = 0; |
| 205 | in.pushback = NULL; |
| 206 | in.reportcols = reportcols; |
| 207 | in.stack = NULL; |
| 208 | |
| 209 | idx = make_index(); |
| 210 | |
| 211 | sourceform = read_input(&in, idx); |
| 212 | if (!sourceform) |
| 213 | exit(EXIT_FAILURE); |
| 214 | |
| 215 | sfree(in.pushback); |
| 216 | |
| 217 | mark_attr_ends(sourceform); |
| 218 | |
| 219 | sfree(infiles); |
| 220 | |
| 221 | keywords = get_keywords(sourceform); |
| 222 | if (!keywords) |
| 223 | exit(EXIT_FAILURE); |
| 224 | gen_citations(sourceform, keywords); |
| 225 | subst_keywords(sourceform, keywords); |
| 226 | |
| 227 | for (p = sourceform; p; p = p->next) |
| 228 | if (p->type == para_IM) |
| 229 | index_merge(idx, TRUE, p->keyword, p->words); |
| 230 | |
| 231 | build_index(idx); |
| 232 | |
| 233 | if (debug) { |
| 234 | index_debug(idx); |
| 235 | dbg_prtkws(keywords); |
| 236 | dbg_prtsource(sourceform); |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * Run the selected set of backends. |
| 241 | */ |
| 242 | for (k = b = 0; k < (int)lenof(backends); k++) |
| 243 | if (b != backends[k].bitfield) { |
| 244 | b = backends[k].bitfield; |
| 245 | if (backendbits == 0 || (backendbits & b)) |
| 246 | backends[k].func(sourceform, keywords, idx); |
| 247 | } |
| 248 | |
| 249 | free_para_list(sourceform); |
| 250 | free_keywords(keywords); |
| 251 | cleanup_index(idx); |
| 252 | } |
| 253 | |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | static void dbg_prtsource(paragraph *sourceform) { |
| 258 | /* |
| 259 | * Output source form in debugging format. |
| 260 | */ |
| 261 | |
| 262 | paragraph *p; |
| 263 | for (p = sourceform; p; p = p->next) { |
| 264 | wchar_t *wp; |
| 265 | printf("para %d ", p->type); |
| 266 | if (p->keyword) { |
| 267 | wp = p->keyword; |
| 268 | while (*wp) { |
| 269 | putchar('\"'); |
| 270 | for (; *wp; wp++) |
| 271 | putchar(*wp); |
| 272 | putchar('\"'); |
| 273 | if (*++wp) |
| 274 | printf(", "); |
| 275 | } |
| 276 | } else |
| 277 | printf("(no keyword)"); |
| 278 | printf(" {\n"); |
| 279 | dbg_prtwordlist(1, p->words); |
| 280 | printf("}\n"); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | static void dbg_prtkws(keywordlist *kws) { |
| 285 | /* |
| 286 | * Output keywords in debugging format. |
| 287 | */ |
| 288 | |
| 289 | int i; |
| 290 | keyword *kw; |
| 291 | |
| 292 | for (i = 0; (kw = index234(kws->keys, i)) != NULL; i++) { |
| 293 | wchar_t *wp; |
| 294 | printf("keyword "); |
| 295 | wp = kw->key; |
| 296 | while (*wp) { |
| 297 | putchar('\"'); |
| 298 | for (; *wp; wp++) |
| 299 | putchar(*wp); |
| 300 | putchar('\"'); |
| 301 | if (*++wp) |
| 302 | printf(", "); |
| 303 | } |
| 304 | printf(" {\n"); |
| 305 | dbg_prtwordlist(1, kw->text); |
| 306 | printf("}\n"); |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | static void dbg_prtwordlist(int level, word *w) { |
| 311 | for (; w; w = w->next) { |
| 312 | wchar_t *wp; |
| 313 | printf("%*sword %d ", level*4, "", w->type); |
| 314 | if (w->text) { |
| 315 | printf("\""); |
| 316 | for (wp = w->text; *wp; wp++) |
| 317 | putchar(*wp); |
| 318 | printf("\""); |
| 319 | } else |
| 320 | printf("(no text)"); |
| 321 | if (w->alt) { |
| 322 | printf(" alt = {\n"); |
| 323 | dbg_prtwordlist(level+1, w->alt); |
| 324 | printf("%*s}", level*4, ""); |
| 325 | } |
| 326 | printf("\n"); |
| 327 | } |
| 328 | } |