diff options
Diffstat (limited to 'usr.bin/mandoc/roff.c')
| -rw-r--r-- | usr.bin/mandoc/roff.c | 124 |
1 files changed, 61 insertions, 63 deletions
diff --git a/usr.bin/mandoc/roff.c b/usr.bin/mandoc/roff.c index 6cf1164ba45..39393ccadf0 100644 --- a/usr.bin/mandoc/roff.c +++ b/usr.bin/mandoc/roff.c @@ -1,4 +1,4 @@ -/* $Id: roff.c,v 1.36 2011/04/24 16:28:48 schwarze Exp $ */ +/* $Id: roff.c,v 1.37 2011/05/29 21:22:18 schwarze Exp $ */ /* * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org> @@ -16,17 +16,15 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> -#include <errno.h> #include <ctype.h> -#include <limits.h> #include <stdlib.h> #include <string.h> -#include <stdio.h> #include "mandoc.h" #include "libroff.h" #include "libmandoc.h" +/* Maximum number of nested if-else conditionals. */ #define RSTACK_MAX 128 enum rofft { @@ -59,7 +57,7 @@ enum rofft { ROFF_EQ, ROFF_EN, ROFF_cblock, - ROFF_ccond, /* FIXME: remove this. */ + ROFF_ccond, ROFF_USERDEF, ROFF_MAX }; @@ -123,6 +121,14 @@ struct roffmac { struct roffmac *next; }; +struct predef { + const char *name; /* predefined input name */ + const char *str; /* replacement symbol */ +}; + +#define PREDEF(__name, __str) \ + { (__name), (__str) }, + static enum rofferr roff_block(ROFF_ARGS); static enum rofferr roff_block_text(ROFF_ARGS); static enum rofferr roff_block_sub(ROFF_ARGS); @@ -140,7 +146,7 @@ static const char *roff_getstrn(const struct roff *, static enum rofferr roff_line_ignore(ROFF_ARGS); static enum rofferr roff_nr(ROFF_ARGS); static int roff_res(struct roff *, - char **, size_t *, int); + char **, size_t *, int, int); static enum rofferr roff_rm(ROFF_ARGS); static void roff_setstr(struct roff *, const char *, const char *, int); @@ -194,6 +200,12 @@ static struct roffmac roffs[ROFF_MAX] = { { NULL, roff_userdef, NULL, NULL, 0, NULL }, }; +/* Array of injected predefined strings. */ +#define PREDEFS_MAX 38 +static const struct predef predefs[PREDEFS_MAX] = { +#include "predefs.in" +}; + static void roff_free1(struct roff *); static enum rofft roff_hash_find(const char *, size_t); static void roff_hash_init(void); @@ -202,7 +214,6 @@ static void roffnode_push(struct roff *, enum rofft, const char *, int, int); static void roffnode_pop(struct roff *); static enum rofft roff_parse(struct roff *, const char *, int *); -static int roff_parse_nat(const char *, unsigned int *); /* See roff_hash_find() */ #define ROFF_HASH(p) (p[0] - ASCII_LO) @@ -228,7 +239,6 @@ roff_hash_init(void) } } - /* * Look up a roff token by its name. Returns ROFF_MAX if no macro by * the nil-terminated string name could be found. @@ -351,6 +361,7 @@ struct roff * roff_alloc(struct regset *regs, struct mparse *parse) { struct roff *r; + int i; r = mandoc_calloc(1, sizeof(struct roff)); r->regs = regs; @@ -358,6 +369,10 @@ roff_alloc(struct regset *regs, struct mparse *parse) r->rstackpos = -1; roff_hash_init(); + + for (i = 0; i < PREDEFS_MAX; i++) + roff_setstr(r, predefs[i].name, predefs[i].str, 0); + return(r); } @@ -368,7 +383,7 @@ roff_alloc(struct regset *regs, struct mparse *parse) * is processed. */ static int -roff_res(struct roff *r, char **bufp, size_t *szp, int pos) +roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos) { const char *stesc; /* start of an escape sequence ('\\') */ const char *stnam; /* start of the name, after "[(*" */ @@ -435,8 +450,9 @@ roff_res(struct roff *r, char **bufp, size_t *szp, int pos) res = roff_getstrn(r, stnam, (size_t)i); if (NULL == res) { - cp -= maxl ? 1 : 0; - continue; + /* TODO: keep track of the correct position. */ + mandoc_msg(MANDOCERR_BADESCAPE, r->parse, ln, pos, NULL); + res = ""; } /* Replace the escape sequence by the string. */ @@ -472,7 +488,7 @@ roff_parseln(struct roff *r, int ln, char **bufp, * words to fill in. */ - if (r->first_string && ! roff_res(r, bufp, szp, pos)) + if (r->first_string && ! roff_res(r, bufp, szp, ln, pos)) return(ROFF_REPARSE); ppos = pos; @@ -589,27 +605,6 @@ roff_parse(struct roff *r, const char *buf, int *pos) return(t); } - -static int -roff_parse_nat(const char *buf, unsigned int *res) -{ - char *ep; - long lval; - - errno = 0; - lval = strtol(buf, &ep, 10); - if (buf[0] == '\0' || *ep != '\0') - return(0); - if ((errno == ERANGE && - (lval == LONG_MAX || lval == LONG_MIN)) || - (lval > INT_MAX || lval < 0)) - return(0); - - *res = (unsigned int)lval; - return(1); -} - - /* ARGSUSED */ static enum rofferr roff_cblock(ROFF_ARGS) @@ -861,21 +856,29 @@ roff_cond_sub(ROFF_ARGS) { enum rofft t; enum roffrule rr; + char *ep; rr = r->last->rule; + roffnode_cleanscope(r); - /* - * Clean out scope. If we've closed ourselves, then don't - * continue. + /* + * If the macro is unknown, first check if it contains a closing + * delimiter `\}'. If it does, close out our scope and return + * the currently-scoped rule (ignore or continue). Else, drop + * into the currently-scoped rule. */ - roffnode_cleanscope(r); - if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos))) { - if ('\\' == (*bufp)[pos] && '}' == (*bufp)[pos + 1]) - return(roff_ccond - (r, ROFF_ccond, bufp, szp, - ln, pos, pos + 2, offs)); + ep = &(*bufp)[pos]; + for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { + ep++; + if ('}' != *ep) + continue; + *ep = '&'; + roff_ccond(r, ROFF_ccond, bufp, szp, + ln, pos, pos + 2, offs); + break; + } return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); } @@ -884,6 +887,7 @@ roff_cond_sub(ROFF_ARGS) * if they're either structurally required (such as loops and * conditionals) or a closing macro. */ + if (ROFFRULE_DENY == rr) if ( ! (ROFFMAC_STRUCT & roffs[t].flags)) if (ROFF_ccond != t) @@ -894,37 +898,28 @@ roff_cond_sub(ROFF_ARGS) ln, ppos, pos, offs)); } - /* ARGSUSED */ static enum rofferr roff_cond_text(ROFF_ARGS) { - char *ep, *st; + char *ep; enum roffrule rr; rr = r->last->rule; + roffnode_cleanscope(r); - /* - * We display the value of the text if out current evaluation - * scope permits us to do so. - */ - - /* FIXME: use roff_ccond? */ - - st = &(*bufp)[pos]; - if (NULL == (ep = strstr(st, "\\}"))) { - roffnode_cleanscope(r); - return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); + ep = &(*bufp)[pos]; + for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { + ep++; + if ('}' != *ep) + continue; + *ep = '&'; + roff_ccond(r, ROFF_ccond, bufp, szp, + ln, pos, pos + 2, offs); } - - if (ep == st || (ep > st && '\\' != *(ep - 1))) - roffnode_pop(r); - - roffnode_cleanscope(r); return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); } - static enum roffrule roff_evalcond(const char *v, int *pos) { @@ -1086,6 +1081,7 @@ roff_nr(ROFF_ARGS) { const char *key; char *val; + int iv; struct reg *rg; val = *bufp + pos; @@ -1094,8 +1090,10 @@ roff_nr(ROFF_ARGS) if (0 == strcmp(key, "nS")) { rg[(int)REG_nS].set = 1; - if ( ! roff_parse_nat(val, &rg[(int)REG_nS].v.u)) - rg[(int)REG_nS].v.u = 0; + if ((iv = mandoc_strntou(val, strlen(val), 10)) >= 0) + rg[REG_nS].v.u = (unsigned)iv; + else + rg[(int)REG_nS].v.u = 0u; } return(ROFF_IGN); |