Annotation of src/usr.bin/mandoc/term_ascii.c, Revision 1.47
1.47 ! schwarze 1: /* $OpenBSD: term_ascii.c,v 1.46 2018/05/20 21:37:11 schwarze Exp $ */
1.1 schwarze 2: /*
1.6 schwarze 3: * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.45 schwarze 4: * Copyright (c) 2014, 2015, 2017, 2018 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: *
1.31 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.31 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 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 <sys/types.h>
19:
1.26 schwarze 20: #include <assert.h>
1.45 schwarze 21: #include <langinfo.h>
1.6 schwarze 22: #include <locale.h>
1.1 schwarze 23: #include <stdint.h>
24: #include <stdio.h>
25: #include <stdlib.h>
1.45 schwarze 26: #include <string.h>
1.1 schwarze 27: #include <unistd.h>
1.6 schwarze 28: #include <wchar.h>
1.1 schwarze 29:
1.4 schwarze 30: #include "mandoc.h"
1.11 schwarze 31: #include "mandoc_aux.h"
1.1 schwarze 32: #include "out.h"
33: #include "term.h"
1.31 schwarze 34: #include "manconf.h"
1.1 schwarze 35: #include "main.h"
36:
1.37 schwarze 37: static struct termp *ascii_init(enum termenc, const struct manoutput *);
1.32 schwarze 38: static int ascii_hspan(const struct termp *,
1.3 schwarze 39: const struct roffsu *);
1.6 schwarze 40: static size_t ascii_width(const struct termp *, int);
1.3 schwarze 41: static void ascii_advance(struct termp *, size_t);
42: static void ascii_begin(struct termp *);
43: static void ascii_end(struct termp *);
1.1 schwarze 44: static void ascii_endline(struct termp *);
1.6 schwarze 45: static void ascii_letter(struct termp *, int);
1.32 schwarze 46: static void ascii_setwidth(struct termp *, int, int);
1.1 schwarze 47:
1.6 schwarze 48: static void locale_advance(struct termp *, size_t);
49: static void locale_endline(struct termp *);
50: static void locale_letter(struct termp *, int);
51: static size_t locale_width(const struct termp *, int);
1.1 schwarze 52:
1.14 schwarze 53:
1.6 schwarze 54: static struct termp *
1.37 schwarze 55: ascii_init(enum termenc enc, const struct manoutput *outopts)
1.1 schwarze 56: {
57: char *v;
1.6 schwarze 58: struct termp *p;
1.1 schwarze 59:
1.42 schwarze 60: p = mandoc_calloc(1, sizeof(*p));
61: p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol));
62: p->maxtcol = 1;
1.1 schwarze 63:
1.33 schwarze 64: p->line = 1;
1.12 schwarze 65: p->defrmargin = p->lastrmargin = 78;
1.28 schwarze 66: p->fontq = mandoc_reallocarray(NULL,
1.42 schwarze 67: (p->fontsz = 8), sizeof(*p->fontq));
1.28 schwarze 68: p->fontq[0] = p->fontl = TERMFONT_NONE;
1.2 schwarze 69:
1.1 schwarze 70: p->begin = ascii_begin;
71: p->end = ascii_end;
1.6 schwarze 72: p->hspan = ascii_hspan;
73: p->type = TERMTYPE_CHAR;
74:
75: p->enc = TERMENC_ASCII;
76: p->advance = ascii_advance;
1.1 schwarze 77: p->endline = ascii_endline;
1.3 schwarze 78: p->letter = ascii_letter;
1.12 schwarze 79: p->setwidth = ascii_setwidth;
1.2 schwarze 80: p->width = ascii_width;
1.1 schwarze 81:
1.6 schwarze 82: if (TERMENC_ASCII != enc) {
1.38 schwarze 83:
84: /*
85: * Do not change any of this to LC_ALL. It might break
86: * the formatting by subtly changing the behaviour of
87: * various functions, for example strftime(3). As a
88: * worst case, it might even cause buffer overflows.
89: */
90:
1.6 schwarze 91: v = TERMENC_LOCALE == enc ?
1.38 schwarze 92: setlocale(LC_CTYPE, "") :
1.14 schwarze 93: setlocale(LC_CTYPE, "en_US.UTF-8");
1.45 schwarze 94:
95: /*
96: * We only support UTF-8,
97: * so revert to ASCII for anything else.
98: */
99:
100: if (v != NULL &&
101: strcmp(nl_langinfo(CODESET), "UTF-8") != 0)
102: v = setlocale(LC_CTYPE, "C");
103:
104: if (v != NULL && MB_CUR_MAX > 1) {
1.6 schwarze 105: p->enc = enc;
106: p->advance = locale_advance;
107: p->endline = locale_endline;
108: p->letter = locale_letter;
109: p->width = locale_width;
110: }
111: }
112:
1.31 schwarze 113: if (outopts->mdoc) {
114: p->mdocstyle = 1;
115: p->defindent = 5;
116: }
117: if (outopts->indent)
118: p->defindent = outopts->indent;
119: if (outopts->width)
120: p->defrmargin = outopts->width;
121: if (outopts->synopsisonly)
122: p->synopsisonly = 1;
1.1 schwarze 123:
1.46 schwarze 124: assert(p->defindent < UINT16_MAX);
125: assert(p->defrmargin < UINT16_MAX);
1.35 schwarze 126: return p;
1.2 schwarze 127: }
128:
1.6 schwarze 129: void *
1.37 schwarze 130: ascii_alloc(const struct manoutput *outopts)
1.6 schwarze 131: {
132:
1.37 schwarze 133: return ascii_init(TERMENC_ASCII, outopts);
1.6 schwarze 134: }
135:
136: void *
1.37 schwarze 137: utf8_alloc(const struct manoutput *outopts)
1.6 schwarze 138: {
139:
1.37 schwarze 140: return ascii_init(TERMENC_UTF8, outopts);
1.6 schwarze 141: }
142:
143: void *
1.37 schwarze 144: locale_alloc(const struct manoutput *outopts)
1.6 schwarze 145: {
146:
1.37 schwarze 147: return ascii_init(TERMENC_LOCALE, outopts);
1.12 schwarze 148: }
149:
150: static void
1.32 schwarze 151: ascii_setwidth(struct termp *p, int iop, int width)
1.12 schwarze 152: {
153:
1.32 schwarze 154: width /= 24;
1.42 schwarze 155: p->tcol->rmargin = p->defrmargin;
1.27 schwarze 156: if (iop > 0)
1.13 schwarze 157: p->defrmargin += width;
1.27 schwarze 158: else if (iop == 0)
1.32 schwarze 159: p->defrmargin = width ? (size_t)width : p->lastrmargin;
160: else if (p->defrmargin > (size_t)width)
1.13 schwarze 161: p->defrmargin -= width;
162: else
1.27 schwarze 163: p->defrmargin = 0;
1.46 schwarze 164: if (p->defrmargin > 1000)
165: p->defrmargin = 1000;
1.42 schwarze 166: p->lastrmargin = p->tcol->rmargin;
167: p->tcol->rmargin = p->maxrmargin = p->defrmargin;
1.29 schwarze 168: }
169:
170: void
1.39 schwarze 171: terminal_sepline(void *arg)
1.29 schwarze 172: {
173: struct termp *p;
174: size_t i;
175:
176: p = (struct termp *)arg;
1.39 schwarze 177: (*p->endline)(p);
1.29 schwarze 178: for (i = 0; i < p->defrmargin; i++)
1.39 schwarze 179: (*p->letter)(p, '-');
180: (*p->endline)(p);
181: (*p->endline)(p);
1.6 schwarze 182: }
1.2 schwarze 183:
184: static size_t
1.6 schwarze 185: ascii_width(const struct termp *p, int c)
1.2 schwarze 186: {
1.47 ! schwarze 187: return c != ASCII_BREAK;
1.1 schwarze 188: }
189:
190: void
191: ascii_free(void *arg)
192: {
193:
194: term_free((struct termp *)arg);
195: }
196:
197: static void
1.6 schwarze 198: ascii_letter(struct termp *p, int c)
1.1 schwarze 199: {
1.14 schwarze 200:
1.1 schwarze 201: putchar(c);
202: }
203:
204: static void
205: ascii_begin(struct termp *p)
206: {
207:
208: (*p->headf)(p, p->argf);
209: }
210:
211: static void
212: ascii_end(struct termp *p)
213: {
214:
215: (*p->footf)(p, p->argf);
216: }
217:
218: static void
219: ascii_endline(struct termp *p)
220: {
221:
1.33 schwarze 222: p->line++;
1.42 schwarze 223: p->tcol->offset -= p->ti;
1.41 schwarze 224: p->ti = 0;
1.1 schwarze 225: putchar('\n');
226: }
227:
228: static void
229: ascii_advance(struct termp *p, size_t len)
230: {
1.14 schwarze 231: size_t i;
1.1 schwarze 232:
1.46 schwarze 233: assert(len < UINT16_MAX);
1.1 schwarze 234: for (i = 0; i < len; i++)
235: putchar(' ');
236: }
1.3 schwarze 237:
1.32 schwarze 238: static int
1.3 schwarze 239: ascii_hspan(const struct termp *p, const struct roffsu *su)
240: {
241: double r;
242:
243: switch (su->unit) {
1.17 schwarze 244: case SCALE_BU:
1.32 schwarze 245: r = su->scale;
1.17 schwarze 246: break;
1.14 schwarze 247: case SCALE_CM:
1.32 schwarze 248: r = su->scale * 240.0 / 2.54;
1.17 schwarze 249: break;
250: case SCALE_FS:
1.32 schwarze 251: r = su->scale * 65536.0;
1.3 schwarze 252: break;
1.14 schwarze 253: case SCALE_IN:
1.32 schwarze 254: r = su->scale * 240.0;
1.3 schwarze 255: break;
1.17 schwarze 256: case SCALE_MM:
1.32 schwarze 257: r = su->scale * 0.24;
1.17 schwarze 258: break;
1.32 schwarze 259: case SCALE_VS:
1.14 schwarze 260: case SCALE_PC:
1.32 schwarze 261: r = su->scale * 40.0;
1.3 schwarze 262: break;
1.14 schwarze 263: case SCALE_PT:
1.32 schwarze 264: r = su->scale * 10.0 / 3.0;
1.3 schwarze 265: break;
1.17 schwarze 266: case SCALE_EN:
267: case SCALE_EM:
1.32 schwarze 268: r = su->scale * 24.0;
1.17 schwarze 269: break;
1.20 schwarze 270: default:
1.17 schwarze 271: abort();
1.3 schwarze 272: }
1.35 schwarze 273: return r > 0.0 ? r + 0.01 : r - 0.01;
1.22 schwarze 274: }
275:
276: const char *
277: ascii_uc2str(int uc)
278: {
279: static const char nbrsp[2] = { ASCII_NBRSP, '\0' };
280: static const char *tab[] = {
281: "<NUL>","<SOH>","<STX>","<ETX>","<EOT>","<ENQ>","<ACK>","<BEL>",
282: "<BS>", "\t", "<LF>", "<VT>", "<FF>", "<CR>", "<SO>", "<SI>",
283: "<DLE>","<DC1>","<DC2>","<DC3>","<DC4>","<NAK>","<SYN>","<ETB>",
284: "<CAN>","<EM>", "<SUB>","<ESC>","<FS>", "<GS>", "<RS>", "<US>",
285: " ", "!", "\"", "#", "$", "%", "&", "'",
286: "(", ")", "*", "+", ",", "-", ".", "/",
287: "0", "1", "2", "3", "4", "5", "6", "7",
288: "8", "9", ":", ";", "<", "=", ">", "?",
289: "@", "A", "B", "C", "D", "E", "F", "G",
290: "H", "I", "J", "K", "L", "M", "N", "O",
291: "P", "Q", "R", "S", "T", "U", "V", "W",
292: "X", "Y", "Z", "[", "\\", "]", "^", "_",
293: "`", "a", "b", "c", "d", "e", "f", "g",
294: "h", "i", "j", "k", "l", "m", "n", "o",
295: "p", "q", "r", "s", "t", "u", "v", "w",
296: "x", "y", "z", "{", "|", "}", "~", "<DEL>",
297: "<80>", "<81>", "<82>", "<83>", "<84>", "<85>", "<86>", "<87>",
298: "<88>", "<89>", "<8A>", "<8B>", "<8C>", "<8D>", "<8E>", "<8F>",
299: "<90>", "<91>", "<92>", "<93>", "<94>", "<95>", "<96>", "<97>",
1.43 schwarze 300: "<98>", "<99>", "<9A>", "<9B>", "<9C>", "<9D>", "<9E>", "<9F>",
1.44 schwarze 301: nbrsp, "!", "/\bc", "GBP", "o\bx", "=\bY", "|", "<section>",
1.24 schwarze 302: "\"", "(C)", "_\ba", "<<", "~", "", "(R)", "-",
1.44 schwarze 303: "<degree>","+-","^2", "^3", "'","<micro>","<paragraph>",".",
304: ",", "^1", "_\bo", ">>", "1/4", "1/2", "3/4", "?",
1.24 schwarze 305: "`\bA", "'\bA", "^\bA", "~\bA", "\"\bA","o\bA", "AE", ",\bC",
306: "`\bE", "'\bE", "^\bE", "\"\bE","`\bI", "'\bI", "^\bI", "\"\bI",
1.44 schwarze 307: "Dh", "~\bN", "`\bO", "'\bO", "^\bO", "~\bO", "\"\bO","x",
1.24 schwarze 308: "/\bO", "`\bU", "'\bU", "^\bU", "\"\bU","'\bY", "Th", "ss",
309: "`\ba", "'\ba", "^\ba", "~\ba", "\"\ba","o\ba", "ae", ",\bc",
310: "`\be", "'\be", "^\be", "\"\be","`\bi", "'\bi", "^\bi", "\"\bi",
1.44 schwarze 311: "dh", "~\bn", "`\bo", "'\bo", "^\bo", "~\bo", "\"\bo","/",
1.24 schwarze 312: "/\bo", "`\bu", "'\bu", "^\bu", "\"\bu","'\by", "th", "\"\by",
313: "A", "a", "A", "a", "A", "a", "'\bC", "'\bc",
314: "^\bC", "^\bc", "C", "c", "C", "c", "D", "d",
315: "/\bD", "/\bd", "E", "e", "E", "e", "E", "e",
316: "E", "e", "E", "e", "^\bG", "^\bg", "G", "g",
317: "G", "g", ",\bG", ",\bg", "^\bH", "^\bh", "/\bH", "/\bh",
318: "~\bI", "~\bi", "I", "i", "I", "i", "I", "i",
319: "I", "i", "IJ", "ij", "^\bJ", "^\bj", ",\bK", ",\bk",
320: "q", "'\bL", "'\bl", ",\bL", ",\bl", "L", "l", "L",
321: "l", "/\bL", "/\bl", "'\bN", "'\bn", ",\bN", ",\bn", "N",
1.22 schwarze 322: "n", "'n", "Ng", "ng", "O", "o", "O", "o",
1.24 schwarze 323: "O", "o", "OE", "oe", "'\bR", "'\br", ",\bR", ",\br",
324: "R", "r", "'\bS", "'\bs", "^\bS", "^\bs", ",\bS", ",\bs",
325: "S", "s", ",\bT", ",\bt", "T", "t", "/\bT", "/\bt",
326: "~\bU", "~\bu", "U", "u", "U", "u", "U", "u",
327: "U", "u", "U", "u", "^\bW", "^\bw", "^\bY", "^\by",
328: "\"\bY","'\bZ", "'\bz", "Z", "z", "Z", "z", "s",
1.22 schwarze 329: "b", "B", "B", "b", "6", "6", "O", "C",
330: "c", "D", "D", "D", "d", "d", "3", "@",
1.24 schwarze 331: "E", "F", ",\bf", "G", "G", "hv", "I", "/\bI",
332: "K", "k", "/\bl", "l", "W", "N", "n", "~\bO",
1.22 schwarze 333: "O", "o", "OI", "oi", "P", "p", "YR", "2",
334: "2", "SH", "sh", "t", "T", "t", "T", "U",
1.24 schwarze 335: "u", "Y", "V", "Y", "y", "/\bZ", "/\bz", "ZH",
336: "ZH", "zh", "zh", "/\b2", "5", "5", "ts", "w",
1.22 schwarze 337: "|", "||", "|=", "!", "DZ", "Dz", "dz", "LJ",
338: "Lj", "lj", "NJ", "Nj", "nj", "A", "a", "I",
339: "i", "O", "o", "U", "u", "U", "u", "U",
340: "u", "U", "u", "U", "u", "@", "A", "a",
1.24 schwarze 341: "A", "a", "AE", "ae", "/\bG", "/\bg", "G", "g",
1.22 schwarze 342: "K", "k", "O", "o", "O", "o", "ZH", "zh",
1.24 schwarze 343: "j", "DZ", "Dz", "dz", "'\bG", "'\bg", "HV", "W",
344: "`\bN", "`\bn", "A", "a", "'\bAE","'\bae","O", "o"};
1.22 schwarze 345:
1.26 schwarze 346: assert(uc >= 0);
1.23 schwarze 347: if ((size_t)uc < sizeof(tab)/sizeof(tab[0]))
1.35 schwarze 348: return tab[uc];
349: return mchars_uc2str(uc);
1.3 schwarze 350: }
351:
1.6 schwarze 352: static size_t
353: locale_width(const struct termp *p, int c)
354: {
355: int rc;
356:
1.15 schwarze 357: if (c == ASCII_NBRSP)
358: c = ' ';
359: rc = wcwidth(c);
360: if (rc < 0)
361: rc = 0;
1.35 schwarze 362: return rc;
1.6 schwarze 363: }
364:
365: static void
366: locale_advance(struct termp *p, size_t len)
367: {
1.14 schwarze 368: size_t i;
1.6 schwarze 369:
1.46 schwarze 370: assert(len < UINT16_MAX);
1.6 schwarze 371: for (i = 0; i < len; i++)
372: putwchar(L' ');
373: }
374:
375: static void
376: locale_endline(struct termp *p)
377: {
378:
1.33 schwarze 379: p->line++;
1.42 schwarze 380: p->tcol->offset -= p->ti;
1.41 schwarze 381: p->ti = 0;
1.6 schwarze 382: putwchar(L'\n');
383: }
384:
385: static void
386: locale_letter(struct termp *p, int c)
387: {
1.14 schwarze 388:
1.6 schwarze 389: putwchar(c);
390: }
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