version 1.390, 2022/05/31 18:09:57 |
version 1.396, 2023/04/28 19:11:04 |
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#include "tbl_parse.h" |
#include "tbl_parse.h" |
#include "eqn_parse.h" |
#include "eqn_parse.h" |
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/* |
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* ASCII_ESC is used to signal from roff_getarg() to roff_expand() |
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* that an escape sequence resulted from copy-in processing and |
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* needs to be checked or interpolated. As it is used nowhere |
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* else, it is defined here rather than in a header file. |
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*/ |
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#define ASCII_ESC 27 |
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/* Maximum number of string expansions per line, to break infinite loops. */ |
/* Maximum number of string expansions per line, to break infinite loops. */ |
#define EXPAND_LIMIT 1000 |
#define EXPAND_LIMIT 1000 |
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Line 1375 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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Line 1367 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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int iarg; /* index beginning the argument */ |
int iarg; /* index beginning the argument */ |
int iendarg; /* index right after the argument */ |
int iendarg; /* index right after the argument */ |
int iend; /* index right after the sequence */ |
int iend; /* index right after the sequence */ |
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int isrc, idst; /* to reduce \\ and \. in names */ |
int deftype; /* type of definition to paste */ |
int deftype; /* type of definition to paste */ |
int argi; /* macro argument index */ |
int argi; /* macro argument index */ |
int quote_args; /* true for \\$@, false for \\$* */ |
int quote_args; /* true for \\$@, false for \\$* */ |
Line 1410 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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Line 1403 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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* it to backslashes and translate backslashes to \e. |
* it to backslashes and translate backslashes to \e. |
*/ |
*/ |
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if (roff_escape(buf->buf, ln, pos, |
if (roff_escape(buf->buf, ln, pos, &iesc, &inam, |
&iesc, &iarg, &iendarg, &iend) != ESCAPE_EXPAND) { |
&iarg, &iendarg, &iend) != ESCAPE_EXPAND) { |
while (pos < iend) { |
while (pos < iend) { |
if (buf->buf[pos] == ec) { |
if (buf->buf[pos] == ec) { |
buf->buf[pos] = '\\'; |
buf->buf[pos] = '\\'; |
Line 1428 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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Line 1421 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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continue; |
continue; |
} |
} |
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/* |
/* Reduce \\ and \. in names. */ |
* Treat "\E" just like "\"; |
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* it only makes a difference in copy mode. |
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*/ |
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inam = iesc + 1; |
if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') { |
while (buf->buf[inam] == 'E') |
isrc = idst = iarg; |
inam++; |
while (isrc < iendarg) { |
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if (isrc + 1 < iendarg && |
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buf->buf[isrc] == '\\' && |
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(buf->buf[isrc + 1] == '\\' || |
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buf->buf[isrc + 1] == '.')) |
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isrc++; |
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buf->buf[idst++] = buf->buf[isrc++]; |
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} |
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iendarg -= isrc - idst; |
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} |
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/* Handle expansion. */ |
/* Handle expansion. */ |
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Line 1450 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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Line 1449 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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break; |
break; |
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/* |
/* |
* If not overriden, |
* If not overridden, |
* let \*(.T through to the formatters. |
* let \*(.T through to the formatters. |
*/ |
*/ |
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Line 1520 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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Line 1519 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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*dst++ = '"'; |
*dst++ = '"'; |
} |
} |
continue; |
continue; |
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case 'A': |
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ubuf[0] = iendarg > iarg ? '1' : '0'; |
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ubuf[1] = '\0'; |
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res = ubuf; |
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break; |
case 'B': |
case 'B': |
npos = 0; |
npos = 0; |
ubuf[0] = iendarg > iarg && iend > iendarg && |
ubuf[0] = iendarg > iarg && iend > iendarg && |
Line 1628 roff_getarg(struct roff *r, char **cpp, int ln, int *p |
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Line 1632 roff_getarg(struct roff *r, char **cpp, int ln, int *p |
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cp++; |
cp++; |
break; |
break; |
case '\\': |
case '\\': |
newesc = 1; |
/* |
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* Signal to roff_expand() that an escape |
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* sequence resulted from copy-in processing |
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* and needs to be checked or interpolated. |
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*/ |
cp[-pairs] = ASCII_ESC; |
cp[-pairs] = ASCII_ESC; |
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newesc = 1; |
pairs++; |
pairs++; |
cp++; |
cp++; |
break; |
break; |
Line 2470 roff_getnum(const char *v, int *pos, int *res, int fla |
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Line 2479 roff_getnum(const char *v, int *pos, int *res, int fla |
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* Evaluate a string comparison condition. |
* Evaluate a string comparison condition. |
* The first character is the delimiter. |
* The first character is the delimiter. |
* Succeed if the string up to its second occurrence |
* Succeed if the string up to its second occurrence |
* matches the string up to its third occurence. |
* matches the string up to its third occurrence. |
* Advance the cursor after the third occurrence |
* Advance the cursor after the third occurrence |
* or lacking that, to the end of the line. |
* or lacking that, to the end of the line. |
*/ |
*/ |
Line 3728 roff_tr(ROFF_ARGS) |
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Line 3737 roff_tr(ROFF_ARGS) |
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{ |
{ |
const char *p, *first, *second; |
const char *p, *first, *second; |
size_t fsz, ssz; |
size_t fsz, ssz; |
enum mandoc_esc esc; |
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p = buf->buf + pos; |
p = buf->buf + pos; |
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Line 3742 roff_tr(ROFF_ARGS) |
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Line 3750 roff_tr(ROFF_ARGS) |
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first = p++; |
first = p++; |
if (*first == '\\') { |
if (*first == '\\') { |
esc = mandoc_escape(&p, NULL, NULL); |
if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR) |
if (esc == ESCAPE_ERROR) { |
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mandoc_msg(MANDOCERR_ESC_BAD, ln, |
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(int)(p - buf->buf), "%s", first); |
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return ROFF_IGN; |
return ROFF_IGN; |
} |
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fsz = (size_t)(p - first); |
fsz = (size_t)(p - first); |
} |
} |
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second = p++; |
second = p++; |
if (*second == '\\') { |
if (*second == '\\') { |
esc = mandoc_escape(&p, NULL, NULL); |
if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR) |
if (esc == ESCAPE_ERROR) { |
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mandoc_msg(MANDOCERR_ESC_BAD, ln, |
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(int)(p - buf->buf), "%s", second); |
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return ROFF_IGN; |
return ROFF_IGN; |
} |
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ssz = (size_t)(p - second); |
ssz = (size_t)(p - second); |
} else if (*second == '\0') { |
} else if (*second == '\0') { |
mandoc_msg(MANDOCERR_TR_ODD, ln, |
mandoc_msg(MANDOCERR_TR_ODD, ln, |
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roff_getname(struct roff *r, char **cpp, int ln, int pos) |
roff_getname(struct roff *r, char **cpp, int ln, int pos) |
{ |
{ |
char *name, *cp; |
char *name, *cp; |
size_t namesz; |
int namesz, inam, iend; |
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name = *cpp; |
name = *cpp; |
if (*name == '\0') |
if (*name == '\0') |
Line 4014 roff_getname(struct roff *r, char **cpp, int ln, int p |
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Line 4014 roff_getname(struct roff *r, char **cpp, int ln, int p |
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/* Advance cp to the byte after the end of the name. */ |
/* Advance cp to the byte after the end of the name. */ |
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for (cp = name; 1; cp++) { |
cp = name; |
namesz = cp - name; |
namesz = 0; |
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for (;;) { |
if (*cp == '\0') |
if (*cp == '\0') |
break; |
break; |
if (*cp == ' ' || *cp == '\t') { |
if (*cp == ' ' || *cp == '\t') { |
cp++; |
cp++; |
break; |
break; |
} |
} |
if (*cp != '\\') |
if (*cp != '\\') { |
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if (name + namesz < cp) { |
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name[namesz] = *cp; |
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*cp = ' '; |
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} |
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namesz++; |
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cp++; |
continue; |
continue; |
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} |
if (cp[1] == '{' || cp[1] == '}') |
if (cp[1] == '{' || cp[1] == '}') |
break; |
break; |
if (*++cp == '\\') |
if (roff_escape(cp, 0, 0, NULL, &inam, |
continue; |
NULL, NULL, &iend) != ESCAPE_UNDEF) { |
mandoc_msg(MANDOCERR_NAMESC, ln, pos, |
mandoc_msg(MANDOCERR_NAMESC, ln, pos, |
"%.*s", (int)(cp - name + 1), name); |
"%.*s%.*s", namesz, name, iend, cp); |
mandoc_escape((const char **)&cp, NULL, NULL); |
cp += iend; |
break; |
break; |
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} |
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/* |
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* In an identifier, \\, \., \G and so on |
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* are reduced to \, ., G and so on, |
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* vaguely similar to copy mode. |
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*/ |
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name[namesz++] = cp[inam]; |
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while (iend--) { |
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if (cp >= name + namesz) |
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*cp = ' '; |
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cp++; |
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} |
} |
} |
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/* Read past spaces. */ |
/* Read past spaces. */ |
Line 4349 roff_getformat(const struct roff *r) |
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Line 4371 roff_getformat(const struct roff *r) |
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* return zero and don't change the current position. |
* return zero and don't change the current position. |
* If the control character has been set with `.cc', then let that grain |
* If the control character has been set with `.cc', then let that grain |
* precedence. |
* precedence. |
* This is slighly contrary to groff, where using the non-breaking |
* This is slightly contrary to groff, where using the non-breaking |
* control character when `cc' has been invoked will cause the |
* control character when `cc' has been invoked will cause the |
* non-breaking macro contents to be printed verbatim. |
* non-breaking macro contents to be printed verbatim. |
*/ |
*/ |