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5051 import mdocml-1.12.3
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Approved by: TBD
*** 1,9 ****
! /* $Id: mandoc.c,v 1.62 2011/12/03 16:08:51 schwarze Exp $ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
! * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
--- 1,9 ----
! /* $Id: mandoc.c,v 1.74 2013/12/30 18:30:32 schwarze Exp $ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
! * Copyright (c) 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
*** 35,150 ****
#define DATESIZE 32
static int a2time(time_t *, const char *, const char *);
static char *time2a(time_t);
- static int numescape(const char *);
! /*
! * Pass over recursive numerical expressions. This context of this
! * function is important: it's only called within character-terminating
! * escapes (e.g., \s[xxxyyy]), so all we need to do is handle initial
! * recursion: we don't care about what's in these blocks.
! * This returns the number of characters skipped or -1 if an error
! * occurs (the caller should bail).
! */
! static int
! numescape(const char *start)
{
! int i;
! size_t sz;
! const char *cp;
- i = 0;
-
- /* The expression consists of a subexpression. */
-
- if ('\\' == start[i]) {
- cp = &start[++i];
/*
! * Read past the end of the subexpression.
! * Bail immediately on errors.
*/
- if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
- return(-1);
- return(i + cp - &start[i]);
- }
! if ('(' != start[i++])
! return(0);
/*
! * A parenthesised subexpression. Read until the closing
! * parenthesis, making sure to handle any nested subexpressions
! * that might ruin our parse.
*/
- while (')' != start[i]) {
- sz = strcspn(&start[i], ")\\");
- i += (int)sz;
-
- if ('\0' == start[i])
- return(-1);
- else if ('\\' != start[i])
- continue;
-
- cp = &start[++i];
- if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
- return(-1);
- i += cp - &start[i];
- }
-
- /* Read past the terminating ')'. */
- return(++i);
- }
-
- enum mandoc_esc
- mandoc_escape(const char **end, const char **start, int *sz)
- {
- char c, term, numeric;
- int i, lim, ssz, rlim;
- const char *cp, *rstart;
- enum mandoc_esc gly;
-
- cp = *end;
- rstart = cp;
- if (start)
- *start = rstart;
- i = lim = 0;
gly = ESCAPE_ERROR;
! term = numeric = '\0';
! switch ((c = cp[i++])) {
/*
* First the glyphs. There are several different forms of
* these, but each eventually returns a substring of the glyph
* name.
*/
case ('('):
gly = ESCAPE_SPECIAL;
! lim = 2;
break;
case ('['):
gly = ESCAPE_SPECIAL;
/*
* Unicode escapes are defined in groff as \[uXXXX] to
* \[u10FFFF], where the contained value must be a valid
* Unicode codepoint. Here, however, only check whether
* it's not a zero-width escape.
*/
! if ('u' == cp[i] && ']' != cp[i + 1])
gly = ESCAPE_UNICODE;
term = ']';
break;
case ('C'):
! if ('\'' != cp[i])
return(ESCAPE_ERROR);
gly = ESCAPE_SPECIAL;
term = '\'';
break;
/*
* Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
* 'X' is the trigger. These have opaque sub-strings.
*/
case ('F'):
/* FALLTHROUGH */
--- 35,126 ----
#define DATESIZE 32
static int a2time(time_t *, const char *, const char *);
static char *time2a(time_t);
!
! enum mandoc_esc
! mandoc_escape(const char **end, const char **start, int *sz)
{
! const char *local_start;
! int local_sz;
! char term;
! enum mandoc_esc gly;
/*
! * When the caller doesn't provide return storage,
! * use local storage.
*/
! if (NULL == start)
! start = &local_start;
! if (NULL == sz)
! sz = &local_sz;
/*
! * Beyond the backslash, at least one input character
! * is part of the escape sequence. With one exception
! * (see below), that character won't be returned.
*/
gly = ESCAPE_ERROR;
! *start = ++*end;
! *sz = 0;
! term = '\0';
! switch ((*start)[-1]) {
/*
* First the glyphs. There are several different forms of
* these, but each eventually returns a substring of the glyph
* name.
*/
case ('('):
gly = ESCAPE_SPECIAL;
! *sz = 2;
break;
case ('['):
gly = ESCAPE_SPECIAL;
/*
* Unicode escapes are defined in groff as \[uXXXX] to
* \[u10FFFF], where the contained value must be a valid
* Unicode codepoint. Here, however, only check whether
* it's not a zero-width escape.
*/
! if ('u' == (*start)[0] && ']' != (*start)[1])
gly = ESCAPE_UNICODE;
term = ']';
break;
case ('C'):
! if ('\'' != **start)
return(ESCAPE_ERROR);
+ *start = ++*end;
+ if ('u' == (*start)[0] && '\'' != (*start)[1])
+ gly = ESCAPE_UNICODE;
+ else
gly = ESCAPE_SPECIAL;
term = '\'';
break;
/*
+ * Escapes taking no arguments at all.
+ */
+ case ('d'):
+ /* FALLTHROUGH */
+ case ('u'):
+ return(ESCAPE_IGNORE);
+
+ /*
+ * The \z escape is supposed to output the following
+ * character without advancing the cursor position.
+ * Since we are mostly dealing with terminal mode,
+ * let us just skip the next character.
+ */
+ case ('z'):
+ return(ESCAPE_SKIPCHAR);
+
+ /*
* Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
* 'X' is the trigger. These have opaque sub-strings.
*/
case ('F'):
/* FALLTHROUGH */
*** 164,188 ****
gly = ESCAPE_IGNORE;
/* FALLTHROUGH */
case ('f'):
if (ESCAPE_ERROR == gly)
gly = ESCAPE_FONT;
!
! rstart= &cp[i];
! if (start)
! *start = rstart;
!
! switch (cp[i++]) {
case ('('):
! lim = 2;
break;
case ('['):
term = ']';
break;
default:
! lim = 1;
! i--;
break;
}
break;
/*
--- 140,160 ----
gly = ESCAPE_IGNORE;
/* FALLTHROUGH */
case ('f'):
if (ESCAPE_ERROR == gly)
gly = ESCAPE_FONT;
! switch (**start) {
case ('('):
! *start = ++*end;
! *sz = 2;
break;
case ('['):
+ *start = ++*end;
term = ']';
break;
default:
! *sz = 1;
break;
}
break;
/*
*** 191,260 ****
*/
case ('A'):
/* FALLTHROUGH */
case ('b'):
/* FALLTHROUGH */
case ('D'):
/* FALLTHROUGH */
case ('o'):
/* FALLTHROUGH */
case ('R'):
/* FALLTHROUGH */
case ('X'):
/* FALLTHROUGH */
case ('Z'):
! if ('\'' != cp[i++])
return(ESCAPE_ERROR);
gly = ESCAPE_IGNORE;
term = '\'';
break;
/*
* These escapes are of the form \X'N', where 'X' is the trigger
* and 'N' resolves to a numerical expression.
*/
- case ('B'):
- /* FALLTHROUGH */
case ('h'):
/* FALLTHROUGH */
case ('H'):
/* FALLTHROUGH */
case ('L'):
/* FALLTHROUGH */
case ('l'):
- gly = ESCAPE_NUMBERED;
/* FALLTHROUGH */
case ('S'):
/* FALLTHROUGH */
case ('v'):
/* FALLTHROUGH */
- case ('w'):
- /* FALLTHROUGH */
case ('x'):
! if (ESCAPE_ERROR == gly)
! gly = ESCAPE_IGNORE;
! if ('\'' != cp[i++])
return(ESCAPE_ERROR);
! term = numeric = '\'';
break;
/*
* Special handling for the numbered character escape.
* XXX Do any other escapes need similar handling?
*/
case ('N'):
! if ('\0' == cp[i])
return(ESCAPE_ERROR);
! *end = &cp[++i];
! if (isdigit((unsigned char)cp[i-1]))
return(ESCAPE_IGNORE);
while (isdigit((unsigned char)**end))
(*end)++;
! if (start)
! *start = &cp[i];
! if (sz)
! *sz = *end - &cp[i];
if ('\0' != **end)
(*end)++;
return(ESCAPE_NUMBERED);
/*
--- 163,232 ----
*/
case ('A'):
/* FALLTHROUGH */
case ('b'):
/* FALLTHROUGH */
+ case ('B'):
+ /* FALLTHROUGH */
case ('D'):
/* FALLTHROUGH */
case ('o'):
/* FALLTHROUGH */
case ('R'):
/* FALLTHROUGH */
+ case ('w'):
+ /* FALLTHROUGH */
case ('X'):
/* FALLTHROUGH */
case ('Z'):
! if ('\'' != **start)
return(ESCAPE_ERROR);
gly = ESCAPE_IGNORE;
+ *start = ++*end;
term = '\'';
break;
/*
* These escapes are of the form \X'N', where 'X' is the trigger
* and 'N' resolves to a numerical expression.
*/
case ('h'):
/* FALLTHROUGH */
case ('H'):
/* FALLTHROUGH */
case ('L'):
/* FALLTHROUGH */
case ('l'):
/* FALLTHROUGH */
case ('S'):
/* FALLTHROUGH */
case ('v'):
/* FALLTHROUGH */
case ('x'):
! if ('\'' != **start)
return(ESCAPE_ERROR);
! gly = ESCAPE_IGNORE;
! *start = ++*end;
! term = '\'';
break;
/*
* Special handling for the numbered character escape.
* XXX Do any other escapes need similar handling?
*/
case ('N'):
! if ('\0' == **start)
return(ESCAPE_ERROR);
! (*end)++;
! if (isdigit((unsigned char)**start)) {
! *sz = 1;
return(ESCAPE_IGNORE);
+ }
+ (*start)++;
while (isdigit((unsigned char)**end))
(*end)++;
! *sz = *end - *start;
if ('\0' != **end)
(*end)++;
return(ESCAPE_NUMBERED);
/*
*** 261,386 ****
* Sizes get a special category of their own.
*/
case ('s'):
gly = ESCAPE_IGNORE;
- rstart = &cp[i];
- if (start)
- *start = rstart;
-
/* See +/- counts as a sign. */
! c = cp[i];
! if ('+' == c || '-' == c || ASCII_HYPH == c)
! ++i;
! switch (cp[i++]) {
case ('('):
! lim = 2;
break;
case ('['):
! term = numeric = ']';
break;
case ('\''):
! term = numeric = '\'';
break;
default:
! lim = 1;
! i--;
break;
}
- /* See +/- counts as a sign. */
- c = cp[i];
- if ('+' == c || '-' == c || ASCII_HYPH == c)
- ++i;
-
break;
/*
* Anything else is assumed to be a glyph.
*/
default:
gly = ESCAPE_SPECIAL;
! lim = 1;
! i--;
break;
}
assert(ESCAPE_ERROR != gly);
- rstart = &cp[i];
- if (start)
- *start = rstart;
-
/*
! * If a terminating block has been specified, we need to
! * handle the case of recursion, which could have their
! * own terminating blocks that mess up our parse. This, by the
! * way, means that the "start" and "size" values will be
! * effectively meaningless.
*/
- ssz = 0;
- if (numeric && -1 == (ssz = numescape(&cp[i])))
- return(ESCAPE_ERROR);
-
- i += ssz;
- rlim = -1;
-
- /*
- * We have a character terminator. Try to read up to that
- * character. If we can't (i.e., we hit the nil), then return
- * an error; if we can, calculate our length, read past the
- * terminating character, and exit.
- */
-
if ('\0' != term) {
! *end = strchr(&cp[i], term);
! if ('\0' == *end)
return(ESCAPE_ERROR);
!
! rlim = *end - &cp[i];
! if (sz)
! *sz = rlim;
(*end)++;
! goto out;
}
!
! assert(lim > 0);
!
! /*
! * We have a numeric limit. If the string is shorter than that,
! * stop and return an error. Else adjust our endpoint, length,
! * and return the current glyph.
! */
!
! if ((size_t)lim > strlen(&cp[i]))
return(ESCAPE_ERROR);
- rlim = lim;
- if (sz)
- *sz = rlim;
-
- *end = &cp[i] + lim;
-
- out:
- assert(rlim >= 0 && rstart);
-
/* Run post-processors. */
switch (gly) {
case (ESCAPE_FONT):
/*
! * Pretend that the constant-width font modes are the
! * same as the regular font modes.
*/
! if (2 == rlim && 'C' == *rstart)
! rstart++;
! else if (1 != rlim)
break;
! switch (*rstart) {
case ('3'):
/* FALLTHROUGH */
case ('B'):
gly = ESCAPE_FONTBOLD;
break;
--- 233,329 ----
* Sizes get a special category of their own.
*/
case ('s'):
gly = ESCAPE_IGNORE;
/* See +/- counts as a sign. */
! if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
! (*end)++;
! switch (**end) {
case ('('):
! *start = ++*end;
! *sz = 2;
break;
case ('['):
! *start = ++*end;
! term = ']';
break;
case ('\''):
! *start = ++*end;
! term = '\'';
break;
default:
! *sz = 1;
break;
}
break;
/*
* Anything else is assumed to be a glyph.
+ * In this case, pass back the character after the backslash.
*/
default:
gly = ESCAPE_SPECIAL;
! *start = --*end;
! *sz = 1;
break;
}
assert(ESCAPE_ERROR != gly);
/*
! * Read up to the terminating character,
! * paying attention to nested escapes.
*/
if ('\0' != term) {
! while (**end != term) {
! switch (**end) {
! case ('\0'):
return(ESCAPE_ERROR);
! case ('\\'):
(*end)++;
! if (ESCAPE_ERROR ==
! mandoc_escape(end, NULL, NULL))
! return(ESCAPE_ERROR);
! break;
! default:
! (*end)++;
! break;
}
! }
! *sz = (*end)++ - *start;
! } else {
! assert(*sz > 0);
! if ((size_t)*sz > strlen(*start))
return(ESCAPE_ERROR);
+ *end += *sz;
+ }
/* Run post-processors. */
switch (gly) {
case (ESCAPE_FONT):
+ if (2 == *sz) {
+ if ('C' == **start) {
/*
! * Treat constant-width font modes
! * just like regular font modes.
*/
! (*start)++;
! (*sz)--;
! } else {
! if ('B' == (*start)[0] && 'I' == (*start)[1])
! gly = ESCAPE_FONTBI;
break;
+ }
+ } else if (1 != *sz)
+ break;
! switch (**start) {
case ('3'):
/* FALLTHROUGH */
case ('B'):
gly = ESCAPE_FONTBOLD;
break;
*** 398,410 ****
gly = ESCAPE_FONTROMAN;
break;
}
break;
case (ESCAPE_SPECIAL):
! if (1 != rlim)
! break;
! if ('c' == *rstart)
gly = ESCAPE_NOSPACE;
break;
default:
break;
}
--- 341,351 ----
gly = ESCAPE_FONTROMAN;
break;
}
break;
case (ESCAPE_SPECIAL):
! if (1 == *sz && 'c' == **start)
gly = ESCAPE_NOSPACE;
break;
default:
break;
}
*** 482,495 ****
/*
* Parse a quoted or unquoted roff-style request or macro argument.
* Return a pointer to the parsed argument, which is either the original
* pointer or advanced by one byte in case the argument is quoted.
! * Null-terminate the argument in place.
* Collapse pairs of quotes inside quoted arguments.
* Advance the argument pointer to the next argument,
! * or to the null byte terminating the argument line.
*/
char *
mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
{
char *start, *cp;
--- 423,436 ----
/*
* Parse a quoted or unquoted roff-style request or macro argument.
* Return a pointer to the parsed argument, which is either the original
* pointer or advanced by one byte in case the argument is quoted.
! * NUL-terminate the argument in place.
* Collapse pairs of quotes inside quoted arguments.
* Advance the argument pointer to the next argument,
! * or to the NUL byte terminating the argument line.
*/
char *
mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
{
char *start, *cp;
*** 504,524 ****
}
pairs = 0;
white = 0;
for (cp = start; '\0' != *cp; cp++) {
! /* Move left after quoted quotes and escaped backslashes. */
if (pairs)
cp[-pairs] = cp[0];
if ('\\' == cp[0]) {
! if ('\\' == cp[1]) {
! /* Poor man's copy mode. */
pairs++;
cp++;
! } else if (0 == quoted && ' ' == cp[1])
/* Skip escaped blanks. */
cp++;
} else if (0 == quoted) {
if (' ' == cp[0]) {
/* Unescaped blanks end unquoted args. */
white = 1;
break;
--- 445,483 ----
}
pairs = 0;
white = 0;
for (cp = start; '\0' != *cp; cp++) {
!
! /*
! * Move the following text left
! * after quoted quotes and after "\\" and "\t".
! */
if (pairs)
cp[-pairs] = cp[0];
+
if ('\\' == cp[0]) {
! /*
! * In copy mode, translate double to single
! * backslashes and backslash-t to literal tabs.
! */
! switch (cp[1]) {
! case ('t'):
! cp[0] = '\t';
! /* FALLTHROUGH */
! case ('\\'):
pairs++;
cp++;
! break;
! case (' '):
/* Skip escaped blanks. */
+ if (0 == quoted)
cp++;
+ break;
+ default:
+ break;
+ }
} else if (0 == quoted) {
if (' ' == cp[0]) {
/* Unescaped blanks end unquoted args. */
white = 1;
break;
*** 538,548 ****
/* Quoted argument without a closing quote. */
if (1 == quoted)
mandoc_msg(MANDOCERR_BADQUOTE, parse, ln, *pos, NULL);
! /* Null-terminate this argument and move to the next one. */
if (pairs)
cp[-pairs] = '\0';
if ('\0' != *cp) {
*cp++ = '\0';
while (' ' == *cp)
--- 497,507 ----
/* Quoted argument without a closing quote. */
if (1 == quoted)
mandoc_msg(MANDOCERR_BADQUOTE, parse, ln, *pos, NULL);
! /* NUL-terminate this argument and move to the next one. */
if (pairs)
cp[-pairs] = '\0';
if ('\0' != *cp) {
*cp++ = '\0';
while (' ' == *cp)
*** 675,710 ****
}
return(found && !enclosed);
}
- /*
- * Find out whether a line is a macro line or not. If it is, adjust the
- * current position and return one; if it isn't, return zero and don't
- * change the current position.
- */
- int
- mandoc_getcontrol(const char *cp, int *ppos)
- {
- int pos;
-
- pos = *ppos;
-
- if ('\\' == cp[pos] && '.' == cp[pos + 1])
- pos += 2;
- else if ('.' == cp[pos] || '\'' == cp[pos])
- pos++;
- else
- return(0);
-
- while (' ' == cp[pos] || '\t' == cp[pos])
- pos++;
-
- *ppos = pos;
- return(1);
- }
-
/*
* Convert a string to a long that may not be <0.
* If the string is invalid, or is less than 0, return -1.
*/
int
--- 634,643 ----