diff options
Diffstat (limited to 'roff.c')
| -rw-r--r-- | roff.c | 85 |
1 files changed, 57 insertions, 28 deletions
@@ -1,4 +1,4 @@ -/* $Id: roff.c,v 1.179 2013/10/05 20:30:05 schwarze Exp $ */ +/* $Id: roff.c,v 1.180 2013/10/05 22:08:12 schwarze Exp $ */ /* * Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010, 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org> @@ -79,16 +79,6 @@ enum roffrule { }; /* - * A single register entity. If "set" is zero, the value of the - * register should be the default one, which is per-register. - * Registers are assumed to be unsigned ints for now. - */ -struct reg { - int set; /* whether set or not */ - unsigned int u; /* unsigned integer */ -}; - -/* * An incredibly-simple string buffer. */ struct roffstr { @@ -105,6 +95,16 @@ struct roffkv { struct roffkv *next; /* next in list */ }; +/* + * A single number register as part of a singly-linked list. + * Registers are assumed to be unsigned ints for now. + */ +struct roffreg { + struct roffstr key; + unsigned int u; + struct roffreg *next; +}; + struct roff { enum mparset parsetype; /* requested parse type */ struct mparse *parse; /* parse point */ @@ -112,7 +112,7 @@ struct roff { enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */ char control; /* control character */ int rstackpos; /* position in rstack */ - struct reg regs[REG__MAX]; + struct roffreg *regtab; /* number registers */ struct roffkv *strtab; /* user-defined strings & macros */ struct roffkv *xmbtab; /* multi-byte trans table (`tr') */ struct roffstr *xtab; /* single-byte trans table (`tr') */ @@ -183,6 +183,7 @@ static enum rofferr roff_cond_sub(ROFF_ARGS); static enum rofferr roff_ds(ROFF_ARGS); static enum roffrule roff_evalcond(const char *, int *); static void roff_free1(struct roff *); +static void roff_freereg(struct roffreg *); static void roff_freestr(struct roffkv *); static char *roff_getname(struct roff *, char **, int, int); static const char *roff_getstrn(const struct roff *, @@ -424,6 +425,10 @@ roff_free1(struct roff *r) r->strtab = r->xmbtab = NULL; + roff_freereg(r->regtab); + + r->regtab = NULL; + if (r->xtab) for (i = 0; i < 128; i++) free(r->xtab[i].p); @@ -440,7 +445,6 @@ roff_reset(struct roff *r) roff_free1(r); r->control = 0; - memset(&r->regs, 0, sizeof(struct reg) * REG__MAX); for (i = 0; i < PREDEFS_MAX; i++) roff_setstr(r, predefs[i].name, predefs[i].str, 0); @@ -1258,25 +1262,52 @@ roff_ds(ROFF_ARGS) return(ROFF_IGN); } -int -roff_regisset(const struct roff *r, enum regs reg) +void +roff_setreg(struct roff *r, const char *name, unsigned int val) { + 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; - return(r->regs[(int)reg].set); + 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->next = r->regtab; + r->regtab = reg; + } + + reg->u = val; } unsigned int -roff_regget(const struct roff *r, enum regs reg) +roff_getreg(const struct roff *r, const char *name) { + struct roffreg *reg; + + for (reg = r->regtab; reg; reg = reg->next) + if (0 == strcmp(name, reg->key.p)) + return(reg->u); - return(r->regs[(int)reg].u); + return(0); } -void -roff_regunset(struct roff *r, enum regs reg) +static void +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 */ @@ -1290,13 +1321,11 @@ roff_nr(ROFF_ARGS) val = *bufp + pos; key = roff_getname(r, &val, ln, pos); - if (0 == strcmp(key, "nS")) { - r->regs[(int)REG_nS].set = 1; - if ((iv = mandoc_strntoi(val, strlen(val), 10)) >= 0) - r->regs[(int)REG_nS].u = (unsigned)iv; - else - r->regs[(int)REG_nS].u = 0u; - } + iv = mandoc_strntoi(val, strlen(val), 10); + if (0 > iv) + iv = 0; + + roff_setreg(r, key, (unsigned)iv); return(ROFF_IGN); } |