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1.1 ! kristaps 1: /* $Id: validate.c,v 1.6 2008/11/30 20:53:34 kristaps Exp $ */
! 2: /*
! 3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
! 4: *
! 5: * Permission to use, copy, modify, and distribute this software for any
! 6: * purpose with or without fee is hereby granted, provided that the
! 7: * above copyright notice and this permission notice appear in all
! 8: * copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
! 11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
! 12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
! 13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
! 14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
! 15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
! 16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
! 17: * PERFORMANCE OF THIS SOFTWARE.
! 18: */
! 19: #include <sys/param.h>
! 20:
! 21: #include <assert.h>
! 22: #include <ctype.h>
! 23: #include <err.h>
! 24: #include <stdio.h>
! 25: #include <stdlib.h>
! 26: #include <string.h>
! 27:
! 28: #include "libmdocml.h"
! 29: #include "private.h"
! 30:
! 31: #define INDENT 4
! 32: #define COLUMNS 60
! 33:
! 34: #ifdef __linux__ /* FIXME */
! 35: #define strlcat strncat
! 36: #endif
! 37:
! 38: enum md_tok {
! 39: MD_BLKIN,
! 40: MD_BLKOUT,
! 41: MD_IN,
! 42: MD_OUT,
! 43: MD_TEXT
! 44: };
! 45:
! 46: struct md_xml {
! 47: const struct md_args *args;
! 48: const struct md_rbuf *rbuf;
! 49:
! 50: struct md_mbuf *mbuf;
! 51: struct rofftree *tree;
! 52: size_t indent;
! 53: size_t pos;
! 54: enum md_tok last;
! 55: int flags;
! 56: #define MD_LITERAL (1 << 0) /* FIXME */
! 57: };
! 58:
! 59: static void roffmsg(void *arg, enum roffmsg,
! 60: const char *, const char *, char *);
! 61: static int roffhead(void *);
! 62: static int rofftail(void *);
! 63: static int roffin(void *, int, int *, char **);
! 64: static int roffdata(void *, int, char *);
! 65: static int roffout(void *, int);
! 66: static int roffblkin(void *, int, int *, char **);
! 67: static int roffblkout(void *, int);
! 68: static int roffspecial(void *, int);
! 69:
! 70: static int mbuf_newline(struct md_xml *);
! 71: static int mbuf_indent(struct md_xml *);
! 72: static int mbuf_data(struct md_xml *, int, char *);
! 73: static int mbuf_putstring(struct md_xml *,
! 74: const char *);
! 75: static int mbuf_nputstring(struct md_xml *,
! 76: const char *, size_t);
! 77:
! 78:
! 79: static int
! 80: mbuf_putstring(struct md_xml *p, const char *buf)
! 81: {
! 82:
! 83: return(mbuf_nputstring(p, buf, strlen(buf)));
! 84: }
! 85:
! 86:
! 87: static int
! 88: mbuf_nputstring(struct md_xml *p, const char *buf, size_t sz)
! 89: {
! 90:
! 91: p->pos += sz;
! 92: return(md_buf_puts(p->mbuf, buf, sz));
! 93: }
! 94:
! 95:
! 96: static int
! 97: mbuf_indent(struct md_xml *p)
! 98: {
! 99: size_t i;
! 100:
! 101: assert(p->pos == 0);
! 102:
! 103: /* LINTED */
! 104: for (i = 0; i < MIN(p->indent, INDENT); i++)
! 105: if ( ! md_buf_putstring(p->mbuf, " "))
! 106: return(0);
! 107:
! 108: p->pos += i * INDENT;
! 109: return(1);
! 110: }
! 111:
! 112:
! 113: static int
! 114: mbuf_newline(struct md_xml *p)
! 115: {
! 116:
! 117: if ( ! md_buf_putchar(p->mbuf, '\n'))
! 118: return(0);
! 119:
! 120: p->pos = 0;
! 121: return(1);
! 122: }
! 123:
! 124:
! 125: static int
! 126: mbuf_data(struct md_xml *p, int space, char *buf)
! 127: {
! 128: size_t sz;
! 129: char *bufp;
! 130:
! 131: assert(p->mbuf);
! 132: assert(0 != p->indent);
! 133:
! 134: if (MD_LITERAL & p->flags)
! 135: return(mbuf_putstring(p, buf));
! 136:
! 137: while (*buf) {
! 138: while (*buf && isspace(*buf))
! 139: buf++;
! 140:
! 141: if (0 == *buf)
! 142: break;
! 143:
! 144: bufp = buf;
! 145: while (*buf && ! isspace(*buf))
! 146: buf++;
! 147:
! 148: if (0 != *buf)
! 149: *buf++ = 0;
! 150:
! 151: sz = strlen(bufp);
! 152:
! 153: if (0 == p->pos) {
! 154: if ( ! mbuf_indent(p))
! 155: return(0);
! 156: if ( ! mbuf_nputstring(p, bufp, sz))
! 157: return(0);
! 158: if (p->indent * INDENT + sz >= COLUMNS) {
! 159: if ( ! mbuf_newline(p))
! 160: return(0);
! 161: continue;
! 162: }
! 163: continue;
! 164: }
! 165:
! 166: if (space && sz + p->pos >= COLUMNS) {
! 167: if ( ! mbuf_newline(p))
! 168: return(0);
! 169: if ( ! mbuf_indent(p))
! 170: return(0);
! 171: } else if (space) {
! 172: if ( ! mbuf_nputstring(p, " ", 1))
! 173: return(0);
! 174: }
! 175:
! 176: if ( ! mbuf_nputstring(p, bufp, sz))
! 177: return(0);
! 178:
! 179: if ( ! space && p->pos >= COLUMNS)
! 180: if ( ! mbuf_newline(p))
! 181: return(0);
! 182: }
! 183:
! 184: return(1);
! 185: }
! 186:
! 187:
! 188: int
! 189: md_line_xml(void *arg, char *buf)
! 190: {
! 191: struct md_xml *p;
! 192:
! 193: p = (struct md_xml *)arg;
! 194: return(roff_engine(p->tree, buf));
! 195: }
! 196:
! 197:
! 198: int
! 199: md_exit_xml(void *data, int flush)
! 200: {
! 201: int c;
! 202: struct md_xml *p;
! 203:
! 204: p = (struct md_xml *)data;
! 205: c = roff_free(p->tree, flush);
! 206: free(p);
! 207:
! 208: return(c);
! 209: }
! 210:
! 211:
! 212: void *
! 213: md_init_xml(const struct md_args *args,
! 214: struct md_mbuf *mbuf, const struct md_rbuf *rbuf)
! 215: {
! 216: struct roffcb cb;
! 217: struct md_xml *p;
! 218:
! 219: cb.roffhead = roffhead;
! 220: cb.rofftail = rofftail;
! 221: cb.roffin = roffin;
! 222: cb.roffout = roffout;
! 223: cb.roffblkin = roffblkin;
! 224: cb.roffblkout = roffblkout;
! 225: cb.roffspecial = roffspecial;
! 226: cb.roffmsg = roffmsg;
! 227: cb.roffdata = roffdata;
! 228:
! 229: if (NULL == (p = calloc(1, sizeof(struct md_xml))))
! 230: err(1, "malloc");
! 231:
! 232: p->args = args;
! 233: p->mbuf = mbuf;
! 234: p->rbuf = rbuf;
! 235:
! 236: assert(mbuf);
! 237:
! 238: if (NULL == (p->tree = roff_alloc(&cb, p))) {
! 239: free(p);
! 240: return(NULL);
! 241: }
! 242:
! 243: return(p);
! 244: }
! 245:
! 246:
! 247: /* ARGSUSED */
! 248: static int
! 249: roffhead(void *arg)
! 250: {
! 251: struct md_xml *p;
! 252:
! 253: assert(arg);
! 254: p = (struct md_xml *)arg;
! 255:
! 256: if ( ! mbuf_putstring(p, "<?xml version=\"1.0\" "
! 257: "encoding=\"UTF-8\"?>\n"))
! 258: return(0);
! 259: if ( ! mbuf_nputstring(p, "<block:mdoc>", 12))
! 260: return(0);
! 261:
! 262: p->indent++;
! 263: p->last = MD_BLKIN;
! 264: return(mbuf_newline(p));
! 265: }
! 266:
! 267:
! 268: static int
! 269: rofftail(void *arg)
! 270: {
! 271: struct md_xml *p;
! 272:
! 273: assert(arg);
! 274: p = (struct md_xml *)arg;
! 275:
! 276: if (0 != p->pos && ! mbuf_newline(p))
! 277: return(0);
! 278:
! 279: if ( ! mbuf_nputstring(p, "</block:mdoc>", 13))
! 280: return(0);
! 281:
! 282: p->last = MD_BLKOUT;
! 283: return(mbuf_newline(p));
! 284: }
! 285:
! 286:
! 287: /* ARGSUSED */
! 288: static int
! 289: roffspecial(void *arg, int tok)
! 290: {
! 291:
! 292: /* FIXME */
! 293: return(1);
! 294: }
! 295:
! 296:
! 297: static int
! 298: roffblkin(void *arg, int tok, int *argc, char **argv)
! 299: {
! 300: struct md_xml *p;
! 301: int i;
! 302:
! 303: assert(arg);
! 304: p = (struct md_xml *)arg;
! 305:
! 306: if (0 != p->pos) {
! 307: if ( ! mbuf_newline(p))
! 308: return(0);
! 309: if ( ! mbuf_indent(p))
! 310: return(0);
! 311: } else if ( ! mbuf_indent(p))
! 312: return(0);
! 313:
! 314: if ( ! mbuf_nputstring(p, "<", 1))
! 315: return(0);
! 316: if ( ! mbuf_nputstring(p, "block:", 6))
! 317: return(0);
! 318: if ( ! mbuf_putstring(p, toknames[tok]))
! 319: return(0);
! 320:
! 321: for (i = 0; ROFF_ARGMAX != argc[i]; i++) {
! 322: if ( ! mbuf_nputstring(p, " ", 1))
! 323: return(0);
! 324: if ( ! mbuf_putstring(p, tokargnames[argc[i]]))
! 325: return(0);
! 326: if ( ! mbuf_nputstring(p, "=\"", 2))
! 327: return(0);
! 328: if ( ! mbuf_putstring(p, argv[i] ? argv[i] : "true"))
! 329: return(0);
! 330: if ( ! mbuf_nputstring(p, "\"", 1))
! 331: return(0);
! 332: }
! 333:
! 334: if ( ! mbuf_nputstring(p, ">", 1))
! 335: return(0);
! 336:
! 337: p->last = MD_BLKIN;
! 338: p->indent++;
! 339: return(mbuf_newline(p));
! 340: }
! 341:
! 342:
! 343: static int
! 344: roffblkout(void *arg, int tok)
! 345: {
! 346: struct md_xml *p;
! 347:
! 348: assert(arg);
! 349: p = (struct md_xml *)arg;
! 350:
! 351: p->indent--;
! 352:
! 353: if (0 != p->pos) {
! 354: if ( ! mbuf_newline(p))
! 355: return(0);
! 356: if ( ! mbuf_indent(p))
! 357: return(0);
! 358: } else if ( ! mbuf_indent(p))
! 359: return(0);
! 360:
! 361: if ( ! mbuf_nputstring(p, "</", 2))
! 362: return(0);
! 363: if ( ! mbuf_nputstring(p, "block:", 6))
! 364: return(0);
! 365: if ( ! mbuf_putstring(p, toknames[tok]))
! 366: return(0);
! 367: if ( ! mbuf_nputstring(p, ">", 1))
! 368: return(0);
! 369:
! 370: p->last = MD_BLKOUT;
! 371: return(mbuf_newline(p));
! 372: }
! 373:
! 374:
! 375: static int
! 376: roffin(void *arg, int tok, int *argc, char **argv)
! 377: {
! 378: struct md_xml *p;
! 379: int i;
! 380:
! 381: assert(arg);
! 382: p = (struct md_xml *)arg;
! 383:
! 384: /*
! 385: * FIXME: put all of this in a buffer, then check the buffer
! 386: * length versus the column width for nicer output. This is a
! 387: * bit hacky.
! 388: */
! 389:
! 390: if (p->pos + 11 > COLUMNS)
! 391: if ( ! mbuf_newline(p))
! 392: return(0);
! 393:
! 394: if (0 != p->pos) {
! 395: switch (p->last) {
! 396: case (MD_TEXT):
! 397: /* FALLTHROUGH */
! 398: case (MD_OUT):
! 399: if ( ! mbuf_nputstring(p, " ", 1))
! 400: return(0);
! 401: break;
! 402: default:
! 403: break;
! 404: }
! 405: } else if ( ! mbuf_indent(p))
! 406: return(0);
! 407:
! 408: p->last = MD_IN;
! 409:
! 410: if ( ! mbuf_nputstring(p, "<", 1))
! 411: return(0);
! 412: if ( ! mbuf_nputstring(p, "inline:", 7))
! 413: return(0);
! 414: if ( ! mbuf_putstring(p, toknames[tok]))
! 415: return(0);
! 416:
! 417: for (i = 0; ROFF_ARGMAX != argc[i]; i++) {
! 418: if ( ! mbuf_nputstring(p, " ", 1))
! 419: return(0);
! 420: if ( ! mbuf_putstring(p, tokargnames[argc[i]]))
! 421: return(0);
! 422: if ( ! mbuf_nputstring(p, "=\"", 2))
! 423: return(0);
! 424: if ( ! mbuf_putstring(p, argv[i] ? argv[i] : "true"))
! 425: return(0);
! 426: if ( ! mbuf_nputstring(p, "\"", 1))
! 427: return(0);
! 428: }
! 429: return(mbuf_nputstring(p, ">", 1));
! 430: }
! 431:
! 432:
! 433: static int
! 434: roffout(void *arg, int tok)
! 435: {
! 436: struct md_xml *p;
! 437:
! 438: assert(arg);
! 439: p = (struct md_xml *)arg;
! 440:
! 441: if (0 == p->pos && ! mbuf_indent(p))
! 442: return(0);
! 443:
! 444: p->last = MD_OUT;
! 445:
! 446: if ( ! mbuf_nputstring(p, "</", 2))
! 447: return(0);
! 448: if ( ! mbuf_nputstring(p, "inline:", 7))
! 449: return(0);
! 450: if ( ! mbuf_putstring(p, toknames[tok]))
! 451: return(0);
! 452: return(mbuf_nputstring(p, ">", 1));
! 453: }
! 454:
! 455:
! 456: static void
! 457: roffmsg(void *arg, enum roffmsg lvl,
! 458: const char *buf, const char *pos, char *msg)
! 459: {
! 460: char *level;
! 461: struct md_xml *p;
! 462:
! 463: assert(arg);
! 464: p = (struct md_xml *)arg;
! 465:
! 466: switch (lvl) {
! 467: case (ROFF_WARN):
! 468: if ( ! (MD_WARN_ALL & p->args->warnings))
! 469: return;
! 470: level = "warning";
! 471: break;
! 472: case (ROFF_ERROR):
! 473: level = "error";
! 474: break;
! 475: default:
! 476: abort();
! 477: }
! 478:
! 479: if (pos)
! 480: (void)fprintf(stderr, "%s:%zu: %s: %s (column %zu)\n",
! 481: p->rbuf->name, p->rbuf->line, level,
! 482: msg, pos - buf);
! 483: else
! 484: (void)fprintf(stderr, "%s: %s: %s\n",
! 485: p->rbuf->name, level, msg);
! 486:
! 487: }
! 488:
! 489:
! 490: static int
! 491: roffdata(void *arg, int space, char *buf)
! 492: {
! 493: struct md_xml *p;
! 494:
! 495: assert(arg);
! 496: p = (struct md_xml *)arg;
! 497: if ( ! mbuf_data(p, space, buf))
! 498: return(0);
! 499:
! 500: p->last = MD_TEXT;
! 501: return(1);
! 502: }