version 1.179, 2013/10/05 20:30:05 |
version 1.198, 2014/03/08 04:43:54 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2010, 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org> |
* Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org> |
* |
* |
* Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the above |
* purpose with or without fee is hereby granted, provided that the above |
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ROFF_am, |
ROFF_am, |
ROFF_ami, |
ROFF_ami, |
ROFF_am1, |
ROFF_am1, |
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ROFF_as, |
ROFF_cc, |
ROFF_cc, |
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ROFF_ce, |
ROFF_de, |
ROFF_de, |
ROFF_dei, |
ROFF_dei, |
ROFF_de1, |
ROFF_de1, |
ROFF_ds, |
ROFF_ds, |
ROFF_el, |
ROFF_el, |
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ROFF_fam, |
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ROFF_hw, |
ROFF_hy, |
ROFF_hy, |
ROFF_ie, |
ROFF_ie, |
ROFF_if, |
ROFF_if, |
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ROFF_EQ, |
ROFF_EQ, |
ROFF_EN, |
ROFF_EN, |
ROFF_cblock, |
ROFF_cblock, |
ROFF_ccond, |
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ROFF_USERDEF, |
ROFF_USERDEF, |
ROFF_MAX |
ROFF_MAX |
}; |
}; |
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enum roffrule { |
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ROFFRULE_ALLOW, |
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ROFFRULE_DENY |
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}; |
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/* |
/* |
* A single register entity. If "set" is zero, the value of the |
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* register should be the default one, which is per-register. |
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* Registers are assumed to be unsigned ints for now. |
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*/ |
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struct reg { |
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int set; /* whether set or not */ |
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unsigned int u; /* unsigned integer */ |
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}; |
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/* |
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* An incredibly-simple string buffer. |
* An incredibly-simple string buffer. |
*/ |
*/ |
struct roffstr { |
struct roffstr { |
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struct roffkv *next; /* next in list */ |
struct roffkv *next; /* next in list */ |
}; |
}; |
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/* |
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* A single number register as part of a singly-linked list. |
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*/ |
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struct roffreg { |
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struct roffstr key; |
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int val; |
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struct roffreg *next; |
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}; |
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struct roff { |
struct roff { |
enum mparset parsetype; /* requested parse type */ |
enum mparset parsetype; /* requested parse type */ |
struct mparse *parse; /* parse point */ |
struct mparse *parse; /* parse point */ |
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int quick; /* skip standard macro deletion */ |
struct roffnode *last; /* leaf of stack */ |
struct roffnode *last; /* leaf of stack */ |
enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */ |
int rstack[RSTACK_MAX]; /* stack of !`ie' rules */ |
char control; /* control character */ |
char control; /* control character */ |
int rstackpos; /* position in rstack */ |
int rstackpos; /* position in rstack */ |
struct reg regs[REG__MAX]; |
struct roffreg *regtab; /* number registers */ |
struct roffkv *strtab; /* user-defined strings & macros */ |
struct roffkv *strtab; /* user-defined strings & macros */ |
struct roffkv *xmbtab; /* multi-byte trans table (`tr') */ |
struct roffkv *xmbtab; /* multi-byte trans table (`tr') */ |
struct roffstr *xtab; /* single-byte trans table (`tr') */ |
struct roffstr *xtab; /* single-byte trans table (`tr') */ |
Line 133 struct roffnode { |
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Line 131 struct roffnode { |
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char *name; /* node name, e.g. macro name */ |
char *name; /* node name, e.g. macro name */ |
char *end; /* end-rules: custom token */ |
char *end; /* end-rules: custom token */ |
int endspan; /* end-rules: next-line or infty */ |
int endspan; /* end-rules: next-line or infty */ |
enum roffrule rule; /* current evaluation rule */ |
int rule; /* current evaluation rule */ |
}; |
}; |
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#define ROFF_ARGS struct roff *r, /* parse ctx */ \ |
#define ROFF_ARGS struct roff *r, /* parse ctx */ \ |
Line 176 static enum rofferr roff_block_text(ROFF_ARGS); |
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Line 174 static enum rofferr roff_block_text(ROFF_ARGS); |
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static enum rofferr roff_block_sub(ROFF_ARGS); |
static enum rofferr roff_block_sub(ROFF_ARGS); |
static enum rofferr roff_cblock(ROFF_ARGS); |
static enum rofferr roff_cblock(ROFF_ARGS); |
static enum rofferr roff_cc(ROFF_ARGS); |
static enum rofferr roff_cc(ROFF_ARGS); |
static enum rofferr roff_ccond(ROFF_ARGS); |
static void roff_ccond(struct roff *, int, int); |
static enum rofferr roff_cond(ROFF_ARGS); |
static enum rofferr roff_cond(ROFF_ARGS); |
static enum rofferr roff_cond_text(ROFF_ARGS); |
static enum rofferr roff_cond_text(ROFF_ARGS); |
static enum rofferr roff_cond_sub(ROFF_ARGS); |
static enum rofferr roff_cond_sub(ROFF_ARGS); |
static enum rofferr roff_ds(ROFF_ARGS); |
static enum rofferr roff_ds(ROFF_ARGS); |
static enum roffrule roff_evalcond(const char *, int *); |
static int roff_evalcond(const char *, int *); |
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static int roff_evalstrcond(const char *, int *); |
static void roff_free1(struct roff *); |
static void roff_free1(struct roff *); |
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static void roff_freereg(struct roffreg *); |
static void roff_freestr(struct roffkv *); |
static void roff_freestr(struct roffkv *); |
static char *roff_getname(struct roff *, char **, int, int); |
static char *roff_getname(struct roff *, char **, int, int); |
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static int roff_getnum(const char *, int *, int *); |
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static int roff_getop(const char *, int *, char *); |
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static int roff_getregn(const struct roff *, |
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const char *, size_t); |
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static int roff_getregro(const char *name); |
static const char *roff_getstrn(const struct roff *, |
static const char *roff_getstrn(const struct roff *, |
const char *, size_t); |
const char *, size_t); |
static enum rofferr roff_it(ROFF_ARGS); |
static enum rofferr roff_it(ROFF_ARGS); |
Line 225 static struct roffmac roffs[ROFF_MAX] = { |
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Line 230 static struct roffmac roffs[ROFF_MAX] = { |
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{ "am", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "am", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "as", roff_ds, NULL, NULL, 0, NULL }, |
{ "cc", roff_cc, NULL, NULL, 0, NULL }, |
{ "cc", roff_cc, NULL, NULL, 0, NULL }, |
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{ "ce", roff_line_ignore, NULL, NULL, 0, NULL }, |
{ "de", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "de", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "ds", roff_ds, NULL, NULL, 0, NULL }, |
{ "ds", roff_ds, NULL, NULL, 0, NULL }, |
{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
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{ "fam", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "hw", roff_line_ignore, NULL, NULL, 0, NULL }, |
{ "hy", roff_line_ignore, NULL, NULL, 0, NULL }, |
{ "hy", roff_line_ignore, NULL, NULL, 0, NULL }, |
{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
Line 253 static struct roffmac roffs[ROFF_MAX] = { |
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Line 262 static struct roffmac roffs[ROFF_MAX] = { |
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{ "EQ", roff_EQ, NULL, NULL, 0, NULL }, |
{ "EQ", roff_EQ, NULL, NULL, 0, NULL }, |
{ "EN", roff_EN, NULL, NULL, 0, NULL }, |
{ "EN", roff_EN, NULL, NULL, 0, NULL }, |
{ ".", roff_cblock, NULL, NULL, 0, NULL }, |
{ ".", roff_cblock, NULL, NULL, 0, NULL }, |
{ "\\}", roff_ccond, NULL, NULL, 0, NULL }, |
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{ NULL, roff_userdef, NULL, NULL, 0, NULL }, |
{ NULL, roff_userdef, NULL, NULL, 0, NULL }, |
}; |
}; |
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Line 389 roffnode_push(struct roff *r, enum rofft tok, const ch |
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Line 397 roffnode_push(struct roff *r, enum rofft tok, const ch |
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p->parent = r->last; |
p->parent = r->last; |
p->line = line; |
p->line = line; |
p->col = col; |
p->col = col; |
p->rule = p->parent ? p->parent->rule : ROFFRULE_DENY; |
p->rule = p->parent ? p->parent->rule : 0; |
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r->last = p; |
r->last = p; |
} |
} |
Line 424 roff_free1(struct roff *r) |
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Line 432 roff_free1(struct roff *r) |
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r->strtab = r->xmbtab = NULL; |
r->strtab = r->xmbtab = NULL; |
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roff_freereg(r->regtab); |
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r->regtab = NULL; |
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if (r->xtab) |
if (r->xtab) |
for (i = 0; i < 128; i++) |
for (i = 0; i < 128; i++) |
free(r->xtab[i].p); |
free(r->xtab[i].p); |
Line 435 roff_free1(struct roff *r) |
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Line 447 roff_free1(struct roff *r) |
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void |
void |
roff_reset(struct roff *r) |
roff_reset(struct roff *r) |
{ |
{ |
int i; |
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roff_free1(r); |
roff_free1(r); |
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r->control = 0; |
r->control = 0; |
memset(&r->regs, 0, sizeof(struct reg) * REG__MAX); |
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for (i = 0; i < PREDEFS_MAX; i++) |
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roff_setstr(r, predefs[i].name, predefs[i].str, 0); |
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} |
} |
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Line 457 roff_free(struct roff *r) |
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Line 463 roff_free(struct roff *r) |
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struct roff * |
struct roff * |
roff_alloc(enum mparset type, struct mparse *parse) |
roff_alloc(enum mparset type, struct mparse *parse, int quick) |
{ |
{ |
struct roff *r; |
struct roff *r; |
int i; |
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r = mandoc_calloc(1, sizeof(struct roff)); |
r = mandoc_calloc(1, sizeof(struct roff)); |
r->parsetype = type; |
r->parsetype = type; |
r->parse = parse; |
r->parse = parse; |
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r->quick = quick; |
r->rstackpos = -1; |
r->rstackpos = -1; |
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roffhash_init(); |
roffhash_init(); |
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for (i = 0; i < PREDEFS_MAX; i++) |
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roff_setstr(r, predefs[i].name, predefs[i].str, 0); |
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return(r); |
return(r); |
} |
} |
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/* |
/* |
* Pre-filter each and every line for reserved words (one beginning with |
* In the current line, expand user-defined strings ("\*") |
* `\*', e.g., `\*(ab'). These must be handled before the actual line |
* and references to number registers ("\n"). |
* is processed. |
* Also check the syntax of other escape sequences. |
* This also checks the syntax of regular escapes. |
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*/ |
*/ |
static enum rofferr |
static enum rofferr |
roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos) |
roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos) |
{ |
{ |
enum mandoc_esc esc; |
char ubuf[12]; /* buffer to print the number */ |
const char *stesc; /* start of an escape sequence ('\\') */ |
const char *stesc; /* start of an escape sequence ('\\') */ |
const char *stnam; /* start of the name, after "[(*" */ |
const char *stnam; /* start of the name, after "[(*" */ |
const char *cp; /* end of the name, e.g. before ']' */ |
const char *cp; /* end of the name, e.g. before ']' */ |
const char *res; /* the string to be substituted */ |
const char *res; /* the string to be substituted */ |
int i, maxl, expand_count; |
char *nbuf; /* new buffer to copy bufp to */ |
size_t nsz; |
size_t nsz; /* size of the new buffer */ |
char *n; |
size_t maxl; /* expected length of the escape name */ |
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size_t naml; /* actual length of the escape name */ |
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int expand_count; /* to avoid infinite loops */ |
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expand_count = 0; |
expand_count = 0; |
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stesc = cp++; |
stesc = cp++; |
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/* |
/* |
* The second character must be an asterisk. |
* The second character must be an asterisk or an n. |
* If it isn't, skip it anyway: It is escaped, |
* If it isn't, skip it anyway: It is escaped, |
* so it can't start another escape sequence. |
* so it can't start another escape sequence. |
*/ |
*/ |
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if ('\0' == *cp) |
if ('\0' == *cp) |
return(ROFF_CONT); |
return(ROFF_CONT); |
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if ('*' != *cp) { |
switch (*cp) { |
res = cp; |
case ('*'): |
esc = mandoc_escape(&cp, NULL, NULL); |
res = NULL; |
if (ESCAPE_ERROR != esc) |
break; |
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case ('n'): |
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res = ubuf; |
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break; |
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default: |
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if (ESCAPE_ERROR != mandoc_escape(&cp, NULL, NULL)) |
continue; |
continue; |
cp = res; |
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mandoc_msg |
mandoc_msg |
(MANDOCERR_BADESCAPE, r->parse, |
(MANDOCERR_BADESCAPE, r->parse, |
ln, (int)(stesc - *bufp), NULL); |
ln, (int)(stesc - *bufp), NULL); |
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/* |
/* |
* The third character decides the length |
* The third character decides the length |
* of the name of the string. |
* of the name of the string or register. |
* Save a pointer to the name. |
* Save a pointer to the name. |
*/ |
*/ |
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/* Advance to the end of the name. */ |
/* Advance to the end of the name. */ |
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for (i = 0; 0 == maxl || i < maxl; i++, cp++) { |
for (naml = 0; 0 == maxl || naml < maxl; naml++, cp++) { |
if ('\0' == *cp) { |
if ('\0' == *cp) { |
mandoc_msg |
mandoc_msg |
(MANDOCERR_BADESCAPE, |
(MANDOCERR_BADESCAPE, |
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* undefined, resume searching for escapes. |
* undefined, resume searching for escapes. |
*/ |
*/ |
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res = roff_getstrn(r, stnam, (size_t)i); |
if (NULL == res) |
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res = roff_getstrn(r, stnam, naml); |
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else |
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snprintf(ubuf, sizeof(ubuf), "%d", |
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roff_getregn(r, stnam, naml)); |
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if (NULL == res) { |
if (NULL == res) { |
mandoc_msg |
mandoc_msg |
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pos = stesc - *bufp; |
pos = stesc - *bufp; |
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nsz = *szp + strlen(res) + 1; |
nsz = *szp + strlen(res) + 1; |
n = mandoc_malloc(nsz); |
nbuf = mandoc_malloc(nsz); |
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strlcpy(n, *bufp, (size_t)(stesc - *bufp + 1)); |
strlcpy(nbuf, *bufp, (size_t)(stesc - *bufp + 1)); |
strlcat(n, res, nsz); |
strlcat(nbuf, res, nsz); |
strlcat(n, cp + (maxl ? 0 : 1), nsz); |
strlcat(nbuf, cp + (maxl ? 0 : 1), nsz); |
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free(*bufp); |
free(*bufp); |
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*bufp = n; |
*bufp = nbuf; |
*szp = nsz; |
*szp = nsz; |
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if (EXPAND_LIMIT >= ++expand_count) |
if (EXPAND_LIMIT >= ++expand_count) |
Line 626 roff_parsetext(char **bufp, size_t *szp, int pos, int |
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Line 638 roff_parsetext(char **bufp, size_t *szp, int pos, int |
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if ('\\' == *p) { |
if ('\\' == *p) { |
/* Skip over escapes. */ |
/* Skip over escapes. */ |
p++; |
p++; |
esc = mandoc_escape |
esc = mandoc_escape((const char **)&p, NULL, NULL); |
((const char const **)&p, NULL, NULL); |
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if (ESCAPE_ERROR == esc) |
if (ESCAPE_ERROR == esc) |
break; |
break; |
continue; |
continue; |
Line 698 roff_parseln(struct roff *r, int ln, char **bufp, |
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Line 709 roff_parseln(struct roff *r, int ln, char **bufp, |
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assert(ROFF_IGN == e || ROFF_CONT == e); |
assert(ROFF_IGN == e || ROFF_CONT == e); |
if (ROFF_CONT != e) |
if (ROFF_CONT != e) |
return(e); |
return(e); |
if (r->eqn) |
} |
return(eqn_read(&r->eqn, ln, *bufp, pos, offs)); |
if (r->eqn) |
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return(eqn_read(&r->eqn, ln, *bufp, ppos, offs)); |
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if ( ! ctl) { |
if (r->tbl) |
if (r->tbl) |
return(tbl_read(r->tbl, ln, *bufp, pos)); |
return(tbl_read(r->tbl, ln, *bufp, pos)); |
return(roff_parsetext(bufp, szp, pos, offs)); |
return(roff_parsetext(bufp, szp, pos, offs)); |
} else if ( ! ctl) { |
} |
if (r->eqn) |
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return(eqn_read(&r->eqn, ln, *bufp, pos, offs)); |
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if (r->tbl) |
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return(tbl_read(r->tbl, ln, *bufp, pos)); |
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return(roff_parsetext(bufp, szp, pos, offs)); |
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} else if (r->eqn) |
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return(eqn_read(&r->eqn, ln, *bufp, ppos, offs)); |
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/* |
/* |
* If a scope is open, go to the child handler for that macro, |
* If a scope is open, go to the child handler for that macro, |
Line 778 roff_parse(struct roff *r, const char *buf, int *pos) |
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Line 784 roff_parse(struct roff *r, const char *buf, int *pos) |
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'\t' == buf[*pos] || ' ' == buf[*pos]) |
'\t' == buf[*pos] || ' ' == buf[*pos]) |
return(ROFF_MAX); |
return(ROFF_MAX); |
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/* |
/* We stop the macro parse at an escape, tab, space, or nil. */ |
* We stop the macro parse at an escape, tab, space, or nil. |
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* However, `\}' is also a valid macro, so make sure we don't |
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* clobber it by seeing the `\' as the end of token. |
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*/ |
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mac = buf + *pos; |
mac = buf + *pos; |
maclen = strcspn(mac + 1, " \\\t\0") + 1; |
maclen = strcspn(mac, " \\\t\0"); |
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t = (r->current_string = roff_getstrn(r, mac, maclen)) |
t = (r->current_string = roff_getstrn(r, mac, maclen)) |
? ROFF_USERDEF : roffhash_find(mac, maclen); |
? ROFF_USERDEF : roffhash_find(mac, maclen); |
Line 854 roffnode_cleanscope(struct roff *r) |
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Line 856 roffnode_cleanscope(struct roff *r) |
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} |
} |
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/* ARGSUSED */ |
static void |
static enum rofferr |
roff_ccond(struct roff *r, int ln, int ppos) |
roff_ccond(ROFF_ARGS) |
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{ |
{ |
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if (NULL == r->last) { |
if (NULL == r->last) { |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
return(ROFF_IGN); |
return; |
} |
} |
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switch (r->last->tok) { |
switch (r->last->tok) { |
Line 873 roff_ccond(ROFF_ARGS) |
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Line 874 roff_ccond(ROFF_ARGS) |
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break; |
break; |
default: |
default: |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
return(ROFF_IGN); |
return; |
} |
} |
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if (r->last->endspan > -1) { |
if (r->last->endspan > -1) { |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
return(ROFF_IGN); |
return; |
} |
} |
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if ((*bufp)[pos]) |
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mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL); |
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roffnode_pop(r); |
roffnode_pop(r); |
roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
return(ROFF_IGN); |
return; |
} |
} |
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Line 931 roff_block(ROFF_ARGS) |
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Line 929 roff_block(ROFF_ARGS) |
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/* |
/* |
* At the beginning of a `de' macro, clear the existing string |
* At the beginning of a `de' macro, clear the existing string |
* with the same name, if there is one. New content will be |
* with the same name, if there is one. New content will be |
* added from roff_block_text() in multiline mode. |
* appended from roff_block_text() in multiline mode. |
*/ |
*/ |
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if (ROFF_de == tok) |
if (ROFF_de == tok) |
Line 1021 roff_block_sub(ROFF_ARGS) |
|
Line 1019 roff_block_sub(ROFF_ARGS) |
|
*/ |
*/ |
if (ROFF_cblock != t) { |
if (ROFF_cblock != t) { |
if (ROFF_de == tok) |
if (ROFF_de == tok) |
roff_setstr(r, r->last->name, *bufp + ppos, 1); |
roff_setstr(r, r->last->name, *bufp + ppos, 2); |
return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
|
|
Line 1037 roff_block_text(ROFF_ARGS) |
|
Line 1035 roff_block_text(ROFF_ARGS) |
|
{ |
{ |
|
|
if (ROFF_de == tok) |
if (ROFF_de == tok) |
roff_setstr(r, r->last->name, *bufp + pos, 1); |
roff_setstr(r, r->last->name, *bufp + pos, 2); |
|
|
return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
Line 1048 static enum rofferr |
|
Line 1046 static enum rofferr |
|
roff_cond_sub(ROFF_ARGS) |
roff_cond_sub(ROFF_ARGS) |
{ |
{ |
enum rofft t; |
enum rofft t; |
enum roffrule rr; |
|
char *ep; |
char *ep; |
|
int rr; |
|
|
rr = r->last->rule; |
rr = r->last->rule; |
roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
Line 1061 roff_cond_sub(ROFF_ARGS) |
|
Line 1059 roff_cond_sub(ROFF_ARGS) |
|
*/ |
*/ |
|
|
if ((ROFF_MAX != t) && |
if ((ROFF_MAX != t) && |
(ROFF_ccond == t || ROFFRULE_ALLOW == rr || |
(rr || ROFFMAC_STRUCT & roffs[t].flags)) { |
ROFFMAC_STRUCT & roffs[t].flags)) { |
|
assert(roffs[t].proc); |
assert(roffs[t].proc); |
return((*roffs[t].proc)(r, t, bufp, szp, |
return((*roffs[t].proc)(r, t, bufp, szp, |
ln, ppos, pos, offs)); |
ln, ppos, pos, offs)); |
} |
} |
|
|
/* Always check for the closing delimiter `\}'. */ |
/* |
|
* If `\}' occurs on a macro line without a preceding macro, |
|
* drop the line completely. |
|
*/ |
|
|
ep = &(*bufp)[pos]; |
ep = *bufp + pos; |
while (NULL != (ep = strchr(ep, '\\'))) { |
if ('\\' == ep[0] && '}' == ep[1]) |
if ('}' != *(++ep)) |
rr = 0; |
continue; |
|
|
|
/* |
/* Always check for the closing delimiter `\}'. */ |
* If we're at the end of line, then just chop |
|
* off the \} and resize the buffer. |
|
* If we aren't, then convert it to spaces. |
|
*/ |
|
|
|
if ('\0' == *(ep + 1)) { |
while (NULL != (ep = strchr(ep, '\\'))) { |
*--ep = '\0'; |
if ('}' == *(++ep)) { |
*szp -= 2; |
*ep = '&'; |
} else |
roff_ccond(r, ln, ep - *bufp - 1); |
*(ep - 1) = *ep = ' '; |
} |
|
++ep; |
roff_ccond(r, ROFF_ccond, bufp, szp, |
|
ln, pos, pos + 2, offs); |
|
break; |
|
} |
} |
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
return(rr ? ROFF_CONT : ROFF_IGN); |
} |
} |
|
|
/* ARGSUSED */ |
/* ARGSUSED */ |
Line 1099 static enum rofferr |
|
Line 1091 static enum rofferr |
|
roff_cond_text(ROFF_ARGS) |
roff_cond_text(ROFF_ARGS) |
{ |
{ |
char *ep; |
char *ep; |
enum roffrule rr; |
int rr; |
|
|
rr = r->last->rule; |
rr = r->last->rule; |
roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
|
|
ep = &(*bufp)[pos]; |
ep = *bufp + pos; |
for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { |
while (NULL != (ep = strchr(ep, '\\'))) { |
ep++; |
if ('}' == *(++ep)) { |
if ('}' != *ep) |
*ep = '&'; |
continue; |
roff_ccond(r, ln, ep - *bufp - 1); |
*ep = '&'; |
} |
roff_ccond(r, ROFF_ccond, bufp, szp, |
++ep; |
ln, pos, pos + 2, offs); |
|
} |
} |
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
return(rr ? ROFF_CONT : ROFF_IGN); |
} |
} |
|
|
static enum roffrule |
static int |
|
roff_getnum(const char *v, int *pos, int *res) |
|
{ |
|
int p, n; |
|
|
|
p = *pos; |
|
n = v[p] == '-'; |
|
if (n) |
|
p++; |
|
|
|
for (*res = 0; isdigit((unsigned char)v[p]); p++) |
|
*res += 10 * *res + v[p] - '0'; |
|
if (p == *pos + n) |
|
return 0; |
|
|
|
if (n) |
|
*res = -*res; |
|
|
|
*pos = p; |
|
return 1; |
|
} |
|
|
|
static int |
|
roff_getop(const char *v, int *pos, char *res) |
|
{ |
|
int e; |
|
|
|
*res = v[*pos]; |
|
e = v[*pos + 1] == '='; |
|
|
|
switch (*res) { |
|
case '=': |
|
break; |
|
case '>': |
|
if (e) |
|
*res = 'g'; |
|
break; |
|
case '<': |
|
if (e) |
|
*res = 'l'; |
|
break; |
|
default: |
|
return(0); |
|
} |
|
|
|
*pos += 1 + e; |
|
|
|
return(*res); |
|
} |
|
|
|
/* |
|
* Evaluate a string comparison condition. |
|
* The first character is the delimiter. |
|
* Succeed if the string up to its second occurrence |
|
* matches the string up to its third occurence. |
|
* Advance the cursor after the third occurrence |
|
* or lacking that, to the end of the line. |
|
*/ |
|
static int |
|
roff_evalstrcond(const char *v, int *pos) |
|
{ |
|
const char *s1, *s2, *s3; |
|
int match; |
|
|
|
match = 0; |
|
s1 = v + *pos; /* initial delimiter */ |
|
s2 = s1 + 1; /* for scanning the first string */ |
|
s3 = strchr(s2, *s1); /* for scanning the second string */ |
|
|
|
if (NULL == s3) /* found no middle delimiter */ |
|
goto out; |
|
|
|
while ('\0' != *++s3) { |
|
if (*s2 != *s3) { /* mismatch */ |
|
s3 = strchr(s3, *s1); |
|
break; |
|
} |
|
if (*s3 == *s1) { /* found the final delimiter */ |
|
match = 1; |
|
break; |
|
} |
|
s2++; |
|
} |
|
|
|
out: |
|
if (NULL == s3) |
|
s3 = strchr(s2, '\0'); |
|
else |
|
s3++; |
|
*pos = s3 - v; |
|
return(match); |
|
} |
|
|
|
static int |
roff_evalcond(const char *v, int *pos) |
roff_evalcond(const char *v, int *pos) |
{ |
{ |
|
int wanttrue, lh, rh; |
|
char op; |
|
|
|
if ('!' == v[*pos]) { |
|
wanttrue = 0; |
|
(*pos)++; |
|
} else |
|
wanttrue = 1; |
|
|
switch (v[*pos]) { |
switch (v[*pos]) { |
case ('n'): |
case ('n'): |
|
/* FALLTHROUGH */ |
|
case ('o'): |
(*pos)++; |
(*pos)++; |
return(ROFFRULE_ALLOW); |
return(wanttrue); |
|
case ('c'): |
|
/* FALLTHROUGH */ |
|
case ('d'): |
|
/* FALLTHROUGH */ |
case ('e'): |
case ('e'): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case ('o'): |
case ('r'): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case ('t'): |
case ('t'): |
(*pos)++; |
(*pos)++; |
return(ROFFRULE_DENY); |
return(!wanttrue); |
default: |
default: |
break; |
break; |
} |
} |
|
|
while (v[*pos] && ' ' != v[*pos]) |
if (!roff_getnum(v, pos, &lh)) |
(*pos)++; |
return(roff_evalstrcond(v, pos) == wanttrue); |
return(ROFFRULE_DENY); |
if (!roff_getop(v, pos, &op)) |
|
return((lh > 0) == wanttrue); |
|
if (!roff_getnum(v, pos, &rh)) |
|
return(0); |
|
|
|
switch (op) { |
|
case 'g': |
|
return((lh >= rh) == wanttrue); |
|
case 'l': |
|
return((lh <= rh) == wanttrue); |
|
case '=': |
|
return((lh == rh) == wanttrue); |
|
case '>': |
|
return((lh > rh) == wanttrue); |
|
case '<': |
|
return((lh < rh) == wanttrue); |
|
default: |
|
return(0); |
|
} |
} |
} |
|
|
/* ARGSUSED */ |
/* ARGSUSED */ |
Line 1164 roff_cond(ROFF_ARGS) |
|
Line 1280 roff_cond(ROFF_ARGS) |
|
*/ |
*/ |
|
|
r->last->rule = ROFF_el == tok ? |
r->last->rule = ROFF_el == tok ? |
(r->rstackpos < 0 ? |
(r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) : |
ROFFRULE_DENY : r->rstack[r->rstackpos--]) : |
|
roff_evalcond(*bufp, &pos); |
roff_evalcond(*bufp, &pos); |
|
|
/* |
/* |
Line 1179 roff_cond(ROFF_ARGS) |
|
Line 1294 roff_cond(ROFF_ARGS) |
|
r->parse, ln, ppos, NULL); |
r->parse, ln, ppos, NULL); |
return(ROFF_ERR); |
return(ROFF_ERR); |
} |
} |
r->rstack[++r->rstackpos] = |
r->rstack[++r->rstackpos] = !r->last->rule; |
ROFFRULE_DENY == r->last->rule ? |
|
ROFFRULE_ALLOW : ROFFRULE_DENY; |
|
} |
} |
|
|
/* If the parent has false as its rule, then so do we. */ |
/* If the parent has false as its rule, then so do we. */ |
|
|
if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule) |
if (r->last->parent && !r->last->parent->rule) |
r->last->rule = ROFFRULE_DENY; |
r->last->rule = 0; |
|
|
/* |
/* |
* Determine scope. |
* Determine scope. |
Line 1254 roff_ds(ROFF_ARGS) |
|
Line 1367 roff_ds(ROFF_ARGS) |
|
string++; |
string++; |
|
|
/* The rest is the value. */ |
/* The rest is the value. */ |
roff_setstr(r, name, string, 0); |
roff_setstr(r, name, string, ROFF_as == tok); |
return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
|
|
|
void |
|
roff_setreg(struct roff *r, const char *name, int val, char sign) |
|
{ |
|
struct roffreg *reg; |
|
|
|
/* Search for an existing register with the same name. */ |
|
reg = r->regtab; |
|
|
|
while (reg && strcmp(name, reg->key.p)) |
|
reg = reg->next; |
|
|
|
if (NULL == reg) { |
|
/* Create a new register. */ |
|
reg = mandoc_malloc(sizeof(struct roffreg)); |
|
reg->key.p = mandoc_strdup(name); |
|
reg->key.sz = strlen(name); |
|
reg->val = 0; |
|
reg->next = r->regtab; |
|
r->regtab = reg; |
|
} |
|
|
|
if ('+' == sign) |
|
reg->val += val; |
|
else if ('-' == sign) |
|
reg->val -= val; |
|
else |
|
reg->val = val; |
|
} |
|
|
|
/* |
|
* Handle some predefined read-only number registers. |
|
* For now, return -1 if the requested register is not predefined; |
|
* in case a predefined read-only register having the value -1 |
|
* were to turn up, another special value would have to be chosen. |
|
*/ |
|
static int |
|
roff_getregro(const char *name) |
|
{ |
|
|
|
switch (*name) { |
|
case ('A'): /* ASCII approximation mode is always off. */ |
|
return(0); |
|
case ('g'): /* Groff compatibility mode is always on. */ |
|
return(1); |
|
case ('H'): /* Fixed horizontal resolution. */ |
|
return (24); |
|
case ('j'): /* Always adjust left margin only. */ |
|
return(0); |
|
case ('T'): /* Some output device is always defined. */ |
|
return(1); |
|
case ('V'): /* Fixed vertical resolution. */ |
|
return (40); |
|
default: |
|
return (-1); |
|
} |
|
} |
|
|
int |
int |
roff_regisset(const struct roff *r, enum regs reg) |
roff_getreg(const struct roff *r, const char *name) |
{ |
{ |
|
struct roffreg *reg; |
|
int val; |
|
|
return(r->regs[(int)reg].set); |
if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) { |
|
val = roff_getregro(name + 1); |
|
if (-1 != val) |
|
return (val); |
|
} |
|
|
|
for (reg = r->regtab; reg; reg = reg->next) |
|
if (0 == strcmp(name, reg->key.p)) |
|
return(reg->val); |
|
|
|
return(0); |
} |
} |
|
|
unsigned int |
static int |
roff_regget(const struct roff *r, enum regs reg) |
roff_getregn(const struct roff *r, const char *name, size_t len) |
{ |
{ |
|
struct roffreg *reg; |
|
int val; |
|
|
return(r->regs[(int)reg].u); |
if ('.' == name[0] && 2 == len) { |
|
val = roff_getregro(name + 1); |
|
if (-1 != val) |
|
return (val); |
|
} |
|
|
|
for (reg = r->regtab; reg; reg = reg->next) |
|
if (len == reg->key.sz && |
|
0 == strncmp(name, reg->key.p, len)) |
|
return(reg->val); |
|
|
|
return(0); |
} |
} |
|
|
void |
static void |
roff_regunset(struct roff *r, enum regs reg) |
roff_freereg(struct roffreg *reg) |
{ |
{ |
|
struct roffreg *old_reg; |
|
|
r->regs[(int)reg].set = 0; |
while (NULL != reg) { |
|
free(reg->key.p); |
|
old_reg = reg; |
|
reg = reg->next; |
|
free(old_reg); |
|
} |
} |
} |
|
|
/* ARGSUSED */ |
/* ARGSUSED */ |
Line 1285 roff_nr(ROFF_ARGS) |
|
Line 1486 roff_nr(ROFF_ARGS) |
|
{ |
{ |
const char *key; |
const char *key; |
char *val; |
char *val; |
|
size_t sz; |
int iv; |
int iv; |
|
char sign; |
|
|
val = *bufp + pos; |
val = *bufp + pos; |
key = roff_getname(r, &val, ln, pos); |
key = roff_getname(r, &val, ln, pos); |
|
|
if (0 == strcmp(key, "nS")) { |
sign = *val; |
r->regs[(int)REG_nS].set = 1; |
if ('+' == sign || '-' == sign) |
if ((iv = mandoc_strntoi(val, strlen(val), 10)) >= 0) |
val++; |
r->regs[(int)REG_nS].u = (unsigned)iv; |
|
else |
|
r->regs[(int)REG_nS].u = 0u; |
|
} |
|
|
|
|
sz = strspn(val, "0123456789"); |
|
iv = sz ? mandoc_strntoi(val, sz, 10) : 0; |
|
|
|
roff_setreg(r, key, iv, sign); |
|
|
return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
|
|
Line 1348 roff_Dd(ROFF_ARGS) |
|
Line 1552 roff_Dd(ROFF_ARGS) |
|
{ |
{ |
const char *const *cp; |
const char *const *cp; |
|
|
if (MPARSE_MDOC != r->parsetype) |
if (0 == r->quick && MPARSE_MDOC != r->parsetype) |
for (cp = __mdoc_reserved; *cp; cp++) |
for (cp = __mdoc_reserved; *cp; cp++) |
roff_setstr(r, *cp, NULL, 0); |
roff_setstr(r, *cp, NULL, 0); |
|
|
Line 1361 roff_TH(ROFF_ARGS) |
|
Line 1565 roff_TH(ROFF_ARGS) |
|
{ |
{ |
const char *const *cp; |
const char *const *cp; |
|
|
if (MPARSE_MDOC != r->parsetype) |
if (0 == r->quick && MPARSE_MDOC != r->parsetype) |
for (cp = __man_reserved; *cp; cp++) |
for (cp = __man_reserved; *cp; cp++) |
roff_setstr(r, *cp, NULL, 0); |
roff_setstr(r, *cp, NULL, 0); |
|
|
Line 1583 roff_userdef(ROFF_ARGS) |
|
Line 1787 roff_userdef(ROFF_ARGS) |
|
|
|
/* |
/* |
* Collect pointers to macro argument strings |
* Collect pointers to macro argument strings |
* and null-terminate them. |
* and NUL-terminate them. |
*/ |
*/ |
cp = *bufp + pos; |
cp = *bufp + pos; |
for (i = 0; i < 9; i++) |
for (i = 0; i < 9; i++) |
Line 1663 roff_getname(struct roff *r, char **cpp, int ln, int p |
|
Line 1867 roff_getname(struct roff *r, char **cpp, int ln, int p |
|
|
|
/* |
/* |
* Store *string into the user-defined string called *name. |
* Store *string into the user-defined string called *name. |
* In multiline mode, append to an existing entry and append '\n'; |
|
* else replace the existing entry, if there is one. |
|
* To clear an existing entry, call with (*r, *name, NULL, 0). |
* To clear an existing entry, call with (*r, *name, NULL, 0). |
|
* append == 0: replace mode |
|
* append == 1: single-line append mode |
|
* append == 2: multiline append mode, append '\n' after each call |
*/ |
*/ |
static void |
static void |
roff_setstr(struct roff *r, const char *name, const char *string, |
roff_setstr(struct roff *r, const char *name, const char *string, |
int multiline) |
int append) |
{ |
{ |
|
|
roff_setstrn(&r->strtab, name, strlen(name), string, |
roff_setstrn(&r->strtab, name, strlen(name), string, |
string ? strlen(string) : 0, multiline); |
string ? strlen(string) : 0, append); |
} |
} |
|
|
static void |
static void |
roff_setstrn(struct roffkv **r, const char *name, size_t namesz, |
roff_setstrn(struct roffkv **r, const char *name, size_t namesz, |
const char *string, size_t stringsz, int multiline) |
const char *string, size_t stringsz, int append) |
{ |
{ |
struct roffkv *n; |
struct roffkv *n; |
char *c; |
char *c; |
Line 1700 roff_setstrn(struct roffkv **r, const char *name, size |
|
Line 1905 roff_setstrn(struct roffkv **r, const char *name, size |
|
n->val.sz = 0; |
n->val.sz = 0; |
n->next = *r; |
n->next = *r; |
*r = n; |
*r = n; |
} else if (0 == multiline) { |
} else if (0 == append) { |
/* In multiline mode, append; else replace. */ |
|
free(n->val.p); |
free(n->val.p); |
n->val.p = NULL; |
n->val.p = NULL; |
n->val.sz = 0; |
n->val.sz = 0; |
Line 1714 roff_setstrn(struct roffkv **r, const char *name, size |
|
Line 1918 roff_setstrn(struct roffkv **r, const char *name, size |
|
* One additional byte for the '\n' in multiline mode, |
* One additional byte for the '\n' in multiline mode, |
* and one for the terminating '\0'. |
* and one for the terminating '\0'. |
*/ |
*/ |
newch = stringsz + (multiline ? 2u : 1u); |
newch = stringsz + (1 < append ? 2u : 1u); |
|
|
if (NULL == n->val.p) { |
if (NULL == n->val.p) { |
n->val.p = mandoc_malloc(newch); |
n->val.p = mandoc_malloc(newch); |
Line 1741 roff_setstrn(struct roffkv **r, const char *name, size |
|
Line 1945 roff_setstrn(struct roffkv **r, const char *name, size |
|
} |
} |
|
|
/* Append terminating bytes. */ |
/* Append terminating bytes. */ |
if (multiline) |
if (1 < append) |
*c++ = '\n'; |
*c++ = '\n'; |
|
|
*c = '\0'; |
*c = '\0'; |
Line 1752 static const char * |
|
Line 1956 static const char * |
|
roff_getstrn(const struct roff *r, const char *name, size_t len) |
roff_getstrn(const struct roff *r, const char *name, size_t len) |
{ |
{ |
const struct roffkv *n; |
const struct roffkv *n; |
|
int i; |
|
|
for (n = r->strtab; n; n = n->next) |
for (n = r->strtab; n; n = n->next) |
if (0 == strncmp(name, n->key.p, len) && |
if (0 == strncmp(name, n->key.p, len) && |
'\0' == n->key.p[(int)len]) |
'\0' == n->key.p[(int)len]) |
return(n->val.p); |
return(n->val.p); |
|
|
|
for (i = 0; i < PREDEFS_MAX; i++) |
|
if (0 == strncmp(name, predefs[i].name, len) && |
|
'\0' == predefs[i].name[(int)len]) |
|
return(predefs[i].str); |
|
|
return(NULL); |
return(NULL); |
} |
} |