Annotation of src/usr.bin/mandoc/tbl_data.c, Revision 1.16
1.16 ! schwarze 1: /* $Id: tbl_data.c,v 1.15 2014/01/05 21:02:43 schwarze Exp $ */
1.1 schwarze 2: /*
1.4 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.7 schwarze 4: * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18: #include <assert.h>
19: #include <ctype.h>
20: #include <stdlib.h>
21: #include <string.h>
1.4 schwarze 22: #include <time.h>
1.1 schwarze 23:
1.4 schwarze 24: #include "mandoc.h"
1.16 ! schwarze 25: #include "mandoc_aux.h"
1.4 schwarze 26: #include "libmandoc.h"
27: #include "libroff.h"
28:
1.15 schwarze 29: static int getdata(struct tbl_node *, struct tbl_span *,
1.9 schwarze 30: int, const char *, int *);
31: static struct tbl_span *newspan(struct tbl_node *, int,
32: struct tbl_row *);
1.4 schwarze 33:
34: static int
1.15 schwarze 35: getdata(struct tbl_node *tbl, struct tbl_span *dp,
1.4 schwarze 36: int ln, const char *p, int *pos)
1.1 schwarze 37: {
1.4 schwarze 38: struct tbl_dat *dat;
39: struct tbl_cell *cp;
1.6 schwarze 40: int sv, spans;
1.4 schwarze 41:
42: cp = NULL;
43: if (dp->last && dp->last->layout)
44: cp = dp->last->layout->next;
45: else if (NULL == dp->last)
46: cp = dp->layout->first;
47:
1.5 schwarze 48: /*
1.12 schwarze 49: * Skip over spanners, since
1.5 schwarze 50: * we want to match data with data layout cells in the header.
51: */
1.4 schwarze 52:
1.12 schwarze 53: while (cp && TBL_CELL_SPAN == cp->pos)
1.4 schwarze 54: cp = cp->next;
55:
1.6 schwarze 56: /*
57: * Stop processing when we reach the end of the available layout
58: * cells. This means that we have extra input.
59: */
60:
61: if (NULL == cp) {
1.11 schwarze 62: mandoc_msg(MANDOCERR_TBLEXTRADAT,
63: tbl->parse, ln, *pos, NULL);
1.6 schwarze 64: /* Skip to the end... */
65: while (p[*pos])
66: (*pos)++;
67: return(1);
68: }
69:
1.4 schwarze 70: dat = mandoc_calloc(1, sizeof(struct tbl_dat));
71: dat->layout = cp;
72: dat->pos = TBL_DATA_NONE;
73:
1.6 schwarze 74: assert(TBL_CELL_SPAN != cp->pos);
75:
76: for (spans = 0, cp = cp->next; cp; cp = cp->next)
77: if (TBL_CELL_SPAN == cp->pos)
78: spans++;
79: else
80: break;
81:
82: dat->spans = spans;
1.4 schwarze 83:
84: if (dp->last) {
85: dp->last->next = dat;
86: dp->last = dat;
87: } else
88: dp->last = dp->first = dat;
89:
90: sv = *pos;
91: while (p[*pos] && p[*pos] != tbl->opts.tab)
92: (*pos)++;
93:
94: /*
95: * Check for a continued-data scope opening. This consists of a
96: * trailing `T{' at the end of the line. Subsequent lines,
97: * until a standalone `T}', are included in our cell.
98: */
1.1 schwarze 99:
1.4 schwarze 100: if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
101: tbl->part = TBL_PART_CDATA;
1.14 schwarze 102: return(1);
1.4 schwarze 103: }
1.1 schwarze 104:
1.10 schwarze 105: assert(*pos - sv >= 0);
106:
107: dat->string = mandoc_malloc((size_t)(*pos - sv + 1));
108: memcpy(dat->string, &p[sv], (size_t)(*pos - sv));
1.4 schwarze 109: dat->string[*pos - sv] = '\0';
1.1 schwarze 110:
1.4 schwarze 111: if (p[*pos])
112: (*pos)++;
1.1 schwarze 113:
114: if ( ! strcmp(dat->string, "_"))
1.4 schwarze 115: dat->pos = TBL_DATA_HORIZ;
1.1 schwarze 116: else if ( ! strcmp(dat->string, "="))
1.4 schwarze 117: dat->pos = TBL_DATA_DHORIZ;
1.1 schwarze 118: else if ( ! strcmp(dat->string, "\\_"))
1.4 schwarze 119: dat->pos = TBL_DATA_NHORIZ;
1.1 schwarze 120: else if ( ! strcmp(dat->string, "\\="))
1.4 schwarze 121: dat->pos = TBL_DATA_NDHORIZ;
1.1 schwarze 122: else
1.4 schwarze 123: dat->pos = TBL_DATA_DATA;
124:
125: if (TBL_CELL_HORIZ == dat->layout->pos ||
1.6 schwarze 126: TBL_CELL_DHORIZ == dat->layout->pos ||
127: TBL_CELL_DOWN == dat->layout->pos)
1.4 schwarze 128: if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
1.11 schwarze 129: mandoc_msg(MANDOCERR_TBLIGNDATA,
130: tbl->parse, ln, sv, NULL);
1.4 schwarze 131:
1.1 schwarze 132: return(1);
133: }
134:
1.5 schwarze 135: /* ARGSUSED */
1.4 schwarze 136: int
137: tbl_cdata(struct tbl_node *tbl, int ln, const char *p)
138: {
139: struct tbl_dat *dat;
140: size_t sz;
1.5 schwarze 141: int pos;
1.4 schwarze 142:
1.5 schwarze 143: pos = 0;
1.4 schwarze 144:
145: dat = tbl->last_span->last;
1.5 schwarze 146:
147: if (p[pos] == 'T' && p[pos + 1] == '}') {
148: pos += 2;
149: if (p[pos] == tbl->opts.tab) {
150: tbl->part = TBL_PART_DATA;
151: pos++;
1.15 schwarze 152: return(getdata(tbl, tbl->last_span, ln, p, &pos));
1.5 schwarze 153: } else if ('\0' == p[pos]) {
154: tbl->part = TBL_PART_DATA;
155: return(1);
156: }
157:
158: /* Fallthrough: T} is part of a word. */
159: }
1.4 schwarze 160:
1.6 schwarze 161: dat->pos = TBL_DATA_DATA;
162:
1.4 schwarze 163: if (dat->string) {
164: sz = strlen(p) + strlen(dat->string) + 2;
165: dat->string = mandoc_realloc(dat->string, sz);
166: strlcat(dat->string, " ", sz);
167: strlcat(dat->string, p, sz);
168: } else
169: dat->string = mandoc_strdup(p);
170:
1.6 schwarze 171: if (TBL_CELL_DOWN == dat->layout->pos)
1.11 schwarze 172: mandoc_msg(MANDOCERR_TBLIGNDATA,
173: tbl->parse, ln, pos, NULL);
1.6 schwarze 174:
1.4 schwarze 175: return(0);
176: }
1.1 schwarze 177:
1.7 schwarze 178: static struct tbl_span *
1.9 schwarze 179: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.7 schwarze 180: {
181: struct tbl_span *dp;
182:
183: dp = mandoc_calloc(1, sizeof(struct tbl_span));
1.9 schwarze 184: dp->line = line;
1.13 schwarze 185: dp->opts = &tbl->opts;
1.7 schwarze 186: dp->layout = rp;
187: dp->head = tbl->first_head;
188:
189: if (tbl->last_span) {
190: tbl->last_span->next = dp;
191: tbl->last_span = dp;
192: } else {
193: tbl->last_span = tbl->first_span = dp;
1.8 schwarze 194: tbl->current_span = NULL;
1.7 schwarze 195: dp->flags |= TBL_SPAN_FIRST;
196: }
197:
198: return(dp);
199: }
200:
1.1 schwarze 201: int
1.4 schwarze 202: tbl_data(struct tbl_node *tbl, int ln, const char *p)
1.1 schwarze 203: {
204: struct tbl_span *dp;
1.4 schwarze 205: struct tbl_row *rp;
206: int pos;
207:
208: pos = 0;
1.1 schwarze 209:
1.4 schwarze 210: if ('\0' == p[pos]) {
1.11 schwarze 211: mandoc_msg(MANDOCERR_TBL, tbl->parse, ln, pos, NULL);
1.4 schwarze 212: return(0);
1.1 schwarze 213: }
214:
1.4 schwarze 215: /*
216: * Choose a layout row: take the one following the last parsed
217: * span's. If that doesn't exist, use the last parsed span's.
1.6 schwarze 218: * If there's no last parsed span, use the first row. Lastly,
219: * if the last span was a horizontal line, use the same layout
220: * (it doesn't "consume" the layout).
1.4 schwarze 221: */
222:
223: if (tbl->last_span) {
224: assert(tbl->last_span->layout);
1.7 schwarze 225: if (tbl->last_span->pos == TBL_SPAN_DATA) {
226: for (rp = tbl->last_span->layout->next;
227: rp && rp->first; rp = rp->next) {
228: switch (rp->first->pos) {
229: case (TBL_CELL_HORIZ):
1.9 schwarze 230: dp = newspan(tbl, ln, rp);
1.7 schwarze 231: dp->pos = TBL_SPAN_HORIZ;
232: continue;
233: case (TBL_CELL_DHORIZ):
1.9 schwarze 234: dp = newspan(tbl, ln, rp);
1.7 schwarze 235: dp->pos = TBL_SPAN_DHORIZ;
236: continue;
237: default:
238: break;
239: }
240: break;
241: }
242: } else
1.6 schwarze 243: rp = tbl->last_span->layout;
244:
1.4 schwarze 245: if (NULL == rp)
246: rp = tbl->last_span->layout;
247: } else
248: rp = tbl->first_row;
1.6 schwarze 249:
250: assert(rp);
1.4 schwarze 251:
1.9 schwarze 252: dp = newspan(tbl, ln, rp);
1.1 schwarze 253:
254: if ( ! strcmp(p, "_")) {
1.4 schwarze 255: dp->pos = TBL_SPAN_HORIZ;
1.1 schwarze 256: return(1);
257: } else if ( ! strcmp(p, "=")) {
1.4 schwarze 258: dp->pos = TBL_SPAN_DHORIZ;
1.1 schwarze 259: return(1);
260: }
261:
1.4 schwarze 262: dp->pos = TBL_SPAN_DATA;
1.1 schwarze 263:
1.4 schwarze 264: /* This returns 0 when TBL_PART_CDATA is entered. */
1.1 schwarze 265:
1.4 schwarze 266: while ('\0' != p[pos])
1.15 schwarze 267: if ( ! getdata(tbl, dp, ln, p, &pos))
1.4 schwarze 268: return(0);
1.1 schwarze 269:
270: return(1);
271: }
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