diff options
Diffstat (limited to 'usr.bin/mandoc/roff.c')
| -rw-r--r-- | usr.bin/mandoc/roff.c | 125 |
1 files changed, 82 insertions, 43 deletions
diff --git a/usr.bin/mandoc/roff.c b/usr.bin/mandoc/roff.c index dfaf843c7c1..ab371c9d8d0 100644 --- a/usr.bin/mandoc/roff.c +++ b/usr.bin/mandoc/roff.c @@ -1,7 +1,7 @@ -/* $OpenBSD: roff.c,v 1.196 2017/07/14 17:16:13 schwarze Exp $ */ +/* $OpenBSD: roff.c,v 1.197 2018/04/09 02:31:37 schwarze Exp $ */ /* * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv> - * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org> + * Copyright (c) 2010-2015, 2017, 2018 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 @@ -44,6 +44,7 @@ #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */ #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \ ROFFDEF_REN | ROFFDEF_STD) +#define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */ /* --- data types --------------------------------------------------------- */ @@ -183,7 +184,7 @@ static int roff_getregn(const struct roff *, const char *, size_t); static int roff_getregro(const struct roff *, const char *name); -static const char *roff_getstrn(const struct roff *, +static const char *roff_getstrn(struct roff *, const char *, size_t, int *); static int roff_hasregn(const struct roff *, const char *, size_t); @@ -1637,6 +1638,11 @@ roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos) } if (t != TOKEN_NONE) *pos = cp - buf; + else if (deftype == ROFFDEF_UNDEF) { + /* Using an undefined macro defines it to be empty. */ + roff_setstrn(&r->strtab, mac, maclen, "", 0, 0); + roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0); + } return t; } @@ -3535,62 +3541,95 @@ roff_setstrn(struct roffkv **r, const char *name, size_t namesz, } static const char * -roff_getstrn(const struct roff *r, const char *name, size_t len, +roff_getstrn(struct roff *r, const char *name, size_t len, int *deftype) { const struct roffkv *n; - int i; + int found, i; enum roff_tok tok; - if (*deftype & ROFFDEF_USER) { - for (n = r->strtab; n != NULL; n = n->next) { - if (strncmp(name, n->key.p, len) == 0 && - n->key.p[len] == '\0' && - n->val.p != NULL) { - *deftype = ROFFDEF_USER; - return n->val.p; - } + found = 0; + for (n = r->strtab; n != NULL; n = n->next) { + if (strncmp(name, n->key.p, len) != 0 || + n->key.p[len] != '\0' || n->val.p == NULL) + continue; + if (*deftype & ROFFDEF_USER) { + *deftype = ROFFDEF_USER; + return n->val.p; + } else { + found = 1; + break; } } - if (*deftype & ROFFDEF_PRE) { - for (i = 0; i < PREDEFS_MAX; i++) { - if (strncmp(name, predefs[i].name, len) == 0 && - predefs[i].name[len] == '\0') { - *deftype = ROFFDEF_PRE; - return predefs[i].str; - } + for (n = r->rentab; n != NULL; n = n->next) { + if (strncmp(name, n->key.p, len) != 0 || + n->key.p[len] != '\0' || n->val.p == NULL) + continue; + if (*deftype & ROFFDEF_REN) { + *deftype = ROFFDEF_REN; + return n->val.p; + } else { + found = 1; + break; } } - if (*deftype & ROFFDEF_REN) { - for (n = r->rentab; n != NULL; n = n->next) { - if (strncmp(name, n->key.p, len) == 0 && - n->key.p[len] == '\0' && - n->val.p != NULL) { - *deftype = ROFFDEF_REN; - return n->val.p; - } + for (i = 0; i < PREDEFS_MAX; i++) { + if (strncmp(name, predefs[i].name, len) != 0 || + predefs[i].name[len] != '\0') + continue; + if (*deftype & ROFFDEF_PRE) { + *deftype = ROFFDEF_PRE; + return predefs[i].str; + } else { + found = 1; + break; } } - if (*deftype & ROFFDEF_STD) { - if (r->man->macroset != MACROSET_MAN) { - for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) { - if (strncmp(name, roff_name[tok], len) == 0 && - roff_name[tok][len] == '\0') { - *deftype = ROFFDEF_STD; - return NULL; - } + if (r->man->macroset != MACROSET_MAN) { + for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) { + if (strncmp(name, roff_name[tok], len) != 0 || + roff_name[tok][len] != '\0') + continue; + if (*deftype & ROFFDEF_STD) { + *deftype = ROFFDEF_STD; + return NULL; + } else { + found = 1; + break; } } - if (r->man->macroset != MACROSET_MDOC) { - for (tok = MAN_TH; tok < MAN_MAX; tok++) { - if (strncmp(name, roff_name[tok], len) == 0 && - roff_name[tok][len] == '\0') { - *deftype = ROFFDEF_STD; - return NULL; - } + } + if (r->man->macroset != MACROSET_MDOC) { + for (tok = MAN_TH; tok < MAN_MAX; tok++) { + if (strncmp(name, roff_name[tok], len) != 0 || + roff_name[tok][len] != '\0') + continue; + if (*deftype & ROFFDEF_STD) { + *deftype = ROFFDEF_STD; + return NULL; + } else { + found = 1; + break; } } } + + if (found == 0 && *deftype != ROFFDEF_ANY) { + if (*deftype & ROFFDEF_REN) { + /* + * This might still be a request, + * so do not treat it as undefined yet. + */ + *deftype = ROFFDEF_UNDEF; + return NULL; + } + + /* Using an undefined string defines it to be empty. */ + + roff_setstrn(&r->strtab, name, len, "", 0, 0); + roff_setstrn(&r->rentab, name, len, NULL, 0, 0); + } + *deftype = 0; return NULL; } |