-/* $Id: out.c,v 1.17 2010/06/25 19:50:23 kristaps Exp $ */
+/* $Id: out.c,v 1.29 2010/08/29 11:28:09 kristaps Exp $ */
/*
- * Copyright (c) 2009 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
#include "out.h"
-/* See a2roffdeco(). */
-#define C2LIM(c, l) do { \
- (l) = 1; \
- if ('[' == (c) || '\'' == (c)) \
- (l) = 0; \
- else if ('(' == (c)) \
- (l) = 2; } \
- while (/* CONSTCOND */ 0)
-
-/* See a2roffdeco(). */
-#define C2TERM(c, t) do { \
- (t) = 0; \
- if ('\'' == (c)) \
- (t) = 1; \
- else if ('[' == (c)) \
- (t) = 2; \
- else if ('(' == (c)) \
- (t) = 3; } \
- while (/* CONSTCOND */ 0)
-
/*
* Convert a `scaling unit' to a consistent form, or fail. Scaling
* units are documented in groff.7, mdoc.7, man.7.
return(0);
}
+ /* FIXME: do this in the caller. */
if ((dst->scale = atof(buf)) < 0)
dst->scale = 0;
dst->unit = unit;
}
-/*
- * Returns length of parsed string (the leading "\" should NOT be
- * included). This can be zero if the current character is the nil
- * terminator. "d" is set to the type of parsed decorator, which may
- * have an adjoining "word" of size "sz" (e.g., "(ab" -> "ab", 2).
- */
int
-a2roffdeco(enum roffdeco *d,
- const char **word, size_t *sz)
+a2roffdeco(enum roffdeco *d, const char **word, size_t *sz)
{
- int j, term, lim;
- char set;
- const char *wp, *sp;
+ int i, j, lim;
+ char term, c;
+ const char *wp;
+ enum roffdeco dd;
*d = DECO_NONE;
+ lim = i = 0;
+ term = '\0';
wp = *word;
- switch ((set = *wp)) {
- case ('\0'):
- return(0);
-
+ switch ((c = wp[i++])) {
case ('('):
- if ('\0' == *(++wp))
- return(1);
- if ('\0' == *(wp + 1))
- return(2);
-
*d = DECO_SPECIAL;
- *sz = 2;
- *word = wp;
- return(3);
-
+ lim = 2;
+ break;
case ('F'):
/* FALLTHROUGH */
case ('f'):
- /*
- * FIXME: this needs work and consolidation (it should
- * follow the sequence that special characters do, for
- * one), but isn't a priority at the moment. Note, for
- * one, that in reality \fB != \FB, although here we let
- * these slip by.
- */
- switch (*(++wp)) {
- case ('\0'):
- return(1);
+ *d = 'F' == c ? DECO_FFONT : DECO_FONT;
+
+ switch (wp[i++]) {
+ case ('('):
+ lim = 2;
+ break;
+ case ('['):
+ term = ']';
+ break;
case ('3'):
/* FALLTHROUGH */
case ('B'):
*d = DECO_BOLD;
- return(2);
+ return(i);
case ('2'):
/* FALLTHROUGH */
case ('I'):
*d = DECO_ITALIC;
- return(2);
+ return(i);
case ('P'):
*d = DECO_PREVIOUS;
- return(2);
+ return(i);
case ('1'):
/* FALLTHROUGH */
case ('R'):
*d = DECO_ROMAN;
- return(2);
- case ('('):
- if ('\0' == *(++wp))
- return(2);
- if ('\0' == *(wp + 1))
- return(3);
-
- *d = 'F' == set ? DECO_FFONT : DECO_FONT;
- *sz = 2;
- *word = wp;
- return(4);
- case ('['):
- *word = ++wp;
- for (j = 0; *wp && ']' != *wp; wp++, j++)
- /* Loop... */ ;
-
- if ('\0' == *wp)
- return(j + 2);
-
- *d = 'F' == set ? DECO_FFONT : DECO_FONT;
- *sz = (size_t)j;
- return(j + 3);
+ return(i);
default:
+ i--;
+ lim = 1;
break;
}
-
- *d = 'F' == set ? DECO_FFONT : DECO_FONT;
- *sz = 1;
- *word = wp;
- return(2);
-
+ break;
+ case ('k'):
+ /* FALLTHROUGH */
+ case ('M'):
+ /* FALLTHROUGH */
+ case ('m'):
+ /* FALLTHROUGH */
case ('*'):
- switch (*(++wp)) {
- case ('\0'):
- return(1);
-
- case ('('):
- if ('\0' == *(++wp))
- return(2);
- if ('\0' == *(wp + 1))
- return(3);
-
+ if ('*' == c)
*d = DECO_RESERVED;
- *sz = 2;
- *word = wp;
- return(4);
+ switch (wp[i++]) {
+ case ('('):
+ lim = 2;
+ break;
case ('['):
- *word = ++wp;
- for (j = 0; *wp && ']' != *wp; wp++, j++)
- /* Loop... */ ;
-
- if ('\0' == *wp)
- return(j + 2);
-
- *d = DECO_RESERVED;
- *sz = (size_t)j;
- return(j + 3);
-
+ term = ']';
+ break;
default:
+ i--;
+ lim = 1;
break;
}
-
- *d = DECO_RESERVED;
- *sz = 1;
- *word = wp;
- return(2);
-
+ break;
+ case ('h'):
+ /* FALLTHROUGH */
+ case ('v'):
+ /* FALLTHROUGH */
case ('s'):
- sp = wp;
- if ('\0' == *(++wp))
- return(1);
-
- C2LIM(*wp, lim);
- C2TERM(*wp, term);
-
- if (term)
- wp++;
-
- *word = wp;
-
- if (*wp == '+' || *wp == '-')
- ++wp;
+ j = 0;
+ if ('+' == wp[i] || '-' == wp[i]) {
+ i++;
+ j = 1;
+ }
- switch (*wp) {
- case ('\''):
- /* FALLTHROUGH */
- case ('['):
- /* FALLTHROUGH */
+ switch (wp[i++]) {
case ('('):
- if (term)
- return((int)(wp - sp));
-
- C2LIM(*wp, lim);
- C2TERM(*wp, term);
- wp++;
+ lim = 2;
+ break;
+ case ('['):
+ term = ']';
+ break;
+ case ('\''):
+ term = '\'';
break;
+ case ('0'):
+ j = 1;
+ /* FALLTHROUGH */
default:
+ i--;
+ lim = 1;
break;
}
- if ( ! isdigit((u_char)*wp))
- return((int)(wp - sp));
+ if ('+' == wp[i] || '-' == wp[i]) {
+ if (j)
+ return(i);
+ i++;
+ }
+
+ /* Handle embedded numerical subexp or escape. */
+
+ if ('(' == wp[i]) {
+ while (wp[i] && ')' != wp[i])
+ if ('\\' == wp[i++]) {
+ /* Handle embedded escape. */
+ *word = &wp[i];
+ i += a2roffdeco(&dd, word, sz);
+ }
- for (j = 0; isdigit((u_char)*wp); j++) {
- if (lim && j >= lim)
+ if (')' == wp[i++])
break;
- ++wp;
- }
- if (term && term < 3) {
- if (1 == term && *wp != '\'')
- return((int)(wp - sp));
- if (2 == term && *wp != ']')
- return((int)(wp - sp));
- ++wp;
+ *d = DECO_NONE;
+ return(i - 1);
+ } else if ('\\' == wp[i]) {
+ *word = &wp[++i];
+ i += a2roffdeco(&dd, word, sz);
}
- *d = DECO_SIZE;
- return((int)(wp - sp));
-
+ break;
case ('['):
- *word = ++wp;
-
- for (j = 0; *wp && ']' != *wp; wp++, j++)
- /* Loop... */ ;
-
- if ('\0' == *wp)
- return(j + 1);
-
*d = DECO_SPECIAL;
- *sz = (size_t)j;
- return(j + 2);
-
+ term = ']';
+ break;
case ('c'):
*d = DECO_NOSPACE;
- *sz = 1;
- return(1);
-
+ return(i);
+ case ('z'):
+ *d = DECO_NONE;
+ if ('\\' == wp[i]) {
+ *word = &wp[++i];
+ return(i + a2roffdeco(&dd, word, sz));
+ } else
+ lim = 1;
+ break;
+ case ('o'):
+ /* FALLTHROUGH */
+ case ('w'):
+ if ('\'' == wp[i++]) {
+ term = '\'';
+ break;
+ }
+ /* FALLTHROUGH */
default:
+ *d = DECO_SSPECIAL;
+ i--;
+ lim = 1;
break;
}
- *d = DECO_SPECIAL;
- *word = wp;
- *sz = 1;
- return(1);
+ assert(term || lim);
+ *word = &wp[i];
+
+ if (term) {
+ j = i;
+ while (wp[i] && wp[i] != term)
+ i++;
+ if ('\0' == wp[i]) {
+ *d = DECO_NONE;
+ return(i);
+ }
+
+ assert(i >= j);
+ *sz = (size_t)(i - j);
+
+ return(i + 1);
+ }
+
+ assert(lim > 0);
+ *sz = (size_t)lim;
+
+ for (j = 0; wp[i] && j < lim; j++)
+ i++;
+ if (j < lim)
+ *d = DECO_NONE;
+
+ return(i);
}
git.ckatri.com / mandoc.git / blobdiff