Annotation of mandoc/tbl_data.c, Revision 1.21
1.21 ! schwarze 1: /* $Id: tbl_data.c,v 1.20 2011/01/25 12:16:22 schwarze Exp $ */
1.1 kristaps 2: /*
1.20 schwarze 3: * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4: * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 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: */
1.11 kristaps 18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
20: #endif
21:
1.1 kristaps 22: #include <assert.h>
23: #include <ctype.h>
24: #include <stdlib.h>
25: #include <string.h>
1.6 kristaps 26: #include <time.h>
1.1 kristaps 27:
28: #include "mandoc.h"
29: #include "libmandoc.h"
30: #include "libroff.h"
31:
1.11 kristaps 32: static int data(struct tbl_node *, struct tbl_span *,
1.1 kristaps 33: int, const char *, int *);
1.20 schwarze 34: static struct tbl_span *newspan(struct tbl_node *, struct tbl_row *);
35:
1.1 kristaps 36:
1.11 kristaps 37: static int
1.8 kristaps 38: data(struct tbl_node *tbl, struct tbl_span *dp,
1.1 kristaps 39: int ln, const char *p, int *pos)
40: {
41: struct tbl_dat *dat;
1.3 kristaps 42: struct tbl_cell *cp;
1.16 kristaps 43: int sv, spans;
1.1 kristaps 44:
1.3 kristaps 45: cp = NULL;
46: if (dp->last && dp->last->layout)
47: cp = dp->last->layout->next;
48: else if (NULL == dp->last)
49: cp = dp->layout->first;
50:
1.12 kristaps 51: /*
52: * Skip over spanners and vertical lines to data formats, since
53: * we want to match data with data layout cells in the header.
54: */
1.3 kristaps 55:
56: while (cp && (TBL_CELL_VERT == cp->pos ||
1.12 kristaps 57: TBL_CELL_DVERT == cp->pos ||
58: TBL_CELL_SPAN == cp->pos))
1.3 kristaps 59: cp = cp->next;
60:
1.16 kristaps 61: /*
62: * Stop processing when we reach the end of the available layout
63: * cells. This means that we have extra input.
64: */
65:
66: if (NULL == cp) {
67: TBL_MSG(tbl, MANDOCERR_TBLEXTRADAT, ln, *pos);
68: /* Skip to the end... */
69: while (p[*pos])
70: (*pos)++;
71: return(1);
72: }
73:
1.1 kristaps 74: dat = mandoc_calloc(1, sizeof(struct tbl_dat));
1.3 kristaps 75: dat->layout = cp;
1.11 kristaps 76: dat->pos = TBL_DATA_NONE;
1.7 kristaps 77:
1.16 kristaps 78: assert(TBL_CELL_SPAN != cp->pos);
79:
80: for (spans = 0, cp = cp->next; cp; cp = cp->next)
81: if (TBL_CELL_SPAN == cp->pos)
82: spans++;
83: else
84: break;
85:
86: dat->spans = spans;
1.1 kristaps 87:
88: if (dp->last) {
89: dp->last->next = dat;
90: dp->last = dat;
91: } else
92: dp->last = dp->first = dat;
93:
94: sv = *pos;
1.8 kristaps 95: while (p[*pos] && p[*pos] != tbl->opts.tab)
1.1 kristaps 96: (*pos)++;
97:
1.11 kristaps 98: /*
99: * Check for a continued-data scope opening. This consists of a
100: * trailing `T{' at the end of the line. Subsequent lines,
101: * until a standalone `T}', are included in our cell.
102: */
103:
104: if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
105: tbl->part = TBL_PART_CDATA;
106: return(0);
107: }
108:
1.1 kristaps 109: dat->string = mandoc_malloc(*pos - sv + 1);
110: memcpy(dat->string, &p[sv], *pos - sv);
111: dat->string[*pos - sv] = '\0';
112:
113: if (p[*pos])
114: (*pos)++;
115:
116: if ( ! strcmp(dat->string, "_"))
1.5 kristaps 117: dat->pos = TBL_DATA_HORIZ;
1.1 kristaps 118: else if ( ! strcmp(dat->string, "="))
1.5 kristaps 119: dat->pos = TBL_DATA_DHORIZ;
1.1 kristaps 120: else if ( ! strcmp(dat->string, "\\_"))
1.5 kristaps 121: dat->pos = TBL_DATA_NHORIZ;
1.1 kristaps 122: else if ( ! strcmp(dat->string, "\\="))
1.5 kristaps 123: dat->pos = TBL_DATA_NDHORIZ;
124: else
125: dat->pos = TBL_DATA_DATA;
1.11 kristaps 126:
1.10 kristaps 127: if (TBL_CELL_HORIZ == dat->layout->pos ||
1.19 kristaps 128: TBL_CELL_DHORIZ == dat->layout->pos ||
129: TBL_CELL_DOWN == dat->layout->pos)
1.10 kristaps 130: if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
131: TBL_MSG(tbl, MANDOCERR_TBLIGNDATA, ln, sv);
1.11 kristaps 132:
133: return(1);
134: }
135:
1.13 kristaps 136: /* ARGSUSED */
1.11 kristaps 137: int
138: tbl_cdata(struct tbl_node *tbl, int ln, const char *p)
139: {
140: struct tbl_dat *dat;
141: size_t sz;
1.14 kristaps 142: int pos;
1.11 kristaps 143:
1.14 kristaps 144: pos = 0;
1.11 kristaps 145:
146: dat = tbl->last_span->last;
1.14 kristaps 147:
148: if (p[pos] == 'T' && p[pos + 1] == '}') {
149: pos += 2;
150: if (p[pos] == tbl->opts.tab) {
151: tbl->part = TBL_PART_DATA;
152: pos++;
153: return(data(tbl, tbl->last_span, ln, p, &pos));
154: } else if ('\0' == p[pos]) {
155: tbl->part = TBL_PART_DATA;
156: return(1);
157: }
158:
159: /* Fallthrough: T} is part of a word. */
160: }
1.17 kristaps 161:
162: dat->pos = TBL_DATA_DATA;
1.11 kristaps 163:
164: if (dat->string) {
165: sz = strlen(p) + strlen(dat->string) + 2;
166: dat->string = mandoc_realloc(dat->string, sz);
167: strlcat(dat->string, " ", sz);
168: strlcat(dat->string, p, sz);
169: } else
170: dat->string = mandoc_strdup(p);
1.19 kristaps 171:
172: if (TBL_CELL_DOWN == dat->layout->pos)
173: TBL_MSG(tbl, MANDOCERR_TBLIGNDATA, ln, pos);
1.11 kristaps 174:
175: return(0);
1.1 kristaps 176: }
177:
1.20 schwarze 178: static struct tbl_span *
179: newspan(struct tbl_node *tbl, struct tbl_row *rp)
180: {
181: struct tbl_span *dp;
182:
183: dp = mandoc_calloc(1, sizeof(struct tbl_span));
184: dp->tbl = &tbl->opts;
185: dp->layout = rp;
186: dp->head = tbl->first_head;
187:
188: if (tbl->last_span) {
189: tbl->last_span->next = dp;
190: tbl->last_span = dp;
191: } else {
192: tbl->last_span = tbl->first_span = dp;
1.21 ! schwarze 193: tbl->current_span = NULL;
1.20 schwarze 194: dp->flags |= TBL_SPAN_FIRST;
195: }
196:
197: return(dp);
198: }
199:
1.2 kristaps 200: int
1.8 kristaps 201: tbl_data(struct tbl_node *tbl, int ln, const char *p)
1.1 kristaps 202: {
203: struct tbl_span *dp;
1.3 kristaps 204: struct tbl_row *rp;
1.1 kristaps 205: int pos;
206:
207: pos = 0;
208:
209: if ('\0' == p[pos]) {
210: TBL_MSG(tbl, MANDOCERR_TBL, ln, pos);
1.4 kristaps 211: return(0);
1.1 kristaps 212: }
213:
1.3 kristaps 214: /*
215: * Choose a layout row: take the one following the last parsed
216: * span's. If that doesn't exist, use the last parsed span's.
1.15 kristaps 217: * If there's no last parsed span, use the first row. Lastly,
218: * if the last span was a horizontal line, use the same layout
219: * (it doesn't "consume" the layout).
1.3 kristaps 220: */
221:
222: if (tbl->last_span) {
223: assert(tbl->last_span->layout);
1.20 schwarze 224: if (tbl->last_span->pos == TBL_SPAN_DATA) {
225: for (rp = tbl->last_span->layout->next;
226: rp && rp->first; rp = rp->next) {
227: switch (rp->first->pos) {
228: case (TBL_CELL_HORIZ):
229: dp = newspan(tbl, rp);
230: dp->pos = TBL_SPAN_HORIZ;
231: continue;
232: case (TBL_CELL_DHORIZ):
233: dp = newspan(tbl, rp);
234: dp->pos = TBL_SPAN_DHORIZ;
235: continue;
236: default:
237: break;
238: }
239: break;
240: }
241: } else
1.15 kristaps 242: rp = tbl->last_span->layout;
1.18 kristaps 243:
1.3 kristaps 244: if (NULL == rp)
245: rp = tbl->last_span->layout;
246: } else
247: rp = tbl->first_row;
1.18 kristaps 248:
249: assert(rp);
1.3 kristaps 250:
1.20 schwarze 251: dp = newspan(tbl, rp);
1.2 kristaps 252:
1.1 kristaps 253: if ( ! strcmp(p, "_")) {
1.5 kristaps 254: dp->pos = TBL_SPAN_HORIZ;
1.2 kristaps 255: return(1);
1.1 kristaps 256: } else if ( ! strcmp(p, "=")) {
1.5 kristaps 257: dp->pos = TBL_SPAN_DHORIZ;
1.2 kristaps 258: return(1);
1.1 kristaps 259: }
1.5 kristaps 260:
261: dp->pos = TBL_SPAN_DATA;
1.1 kristaps 262:
1.11 kristaps 263: /* This returns 0 when TBL_PART_CDATA is entered. */
264:
1.1 kristaps 265: while ('\0' != p[pos])
1.11 kristaps 266: if ( ! data(tbl, dp, ln, p, &pos))
267: return(0);
1.1 kristaps 268:
1.2 kristaps 269: return(1);
1.1 kristaps 270: }
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