diff options
Diffstat (limited to 'tbl.c')
| -rw-r--r-- | tbl.c | 71 |
1 files changed, 61 insertions, 10 deletions
@@ -1,4 +1,4 @@ -/* $Id: tbl.c,v 1.2 2010/12/28 10:55:24 kristaps Exp $ */ +/* $Id: tbl.c,v 1.3 2010/12/28 13:46:07 kristaps Exp $ */ /* * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@kth.se> * @@ -15,6 +15,7 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> +#include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> @@ -24,19 +25,14 @@ #include "libmandoc.h" #include "libroff.h" -enum tbl_part { - TBL_PART_OPTS, /* in options (first line) */ - TBL_PART_LAYOUT, /* describing layout */ - TBL_PART_DATA /* creating data rows */ -}; - - -struct tbl { - enum tbl_part part; +static const char tbl_toks[TBL_TOK__MAX] = { + '(', ')', ',', ';', '.', + ' ', '\t', '\0' }; static void tbl_init(struct tbl *); static void tbl_clear(struct tbl *); +static enum tbl_tok tbl_next_char(char); static void tbl_clear(struct tbl *tbl) @@ -92,3 +88,58 @@ tbl_reset(struct tbl *tbl) tbl_clear(tbl); tbl_init(tbl); } + +static enum tbl_tok +tbl_next_char(char c) +{ + int i; + + /* + * These are delimiting tokens. They separate out words in the + * token stream. + * + * FIXME: make this into a hashtable for faster lookup. + */ + for (i = 0; i < TBL_TOK__MAX; i++) + if (c == tbl_toks[i]) + return((enum tbl_tok)i); + + return(TBL_TOK__MAX); +} + +enum tbl_tok +tbl_next(struct tbl *tbl, const char *p, int *pos) +{ + int i; + enum tbl_tok c; + + tbl->buf[0] = '\0'; + + if (TBL_TOK__MAX != (c = tbl_next_char(p[*pos]))) { + if (TBL_TOK_NIL != c) { + tbl->buf[0] = p[*pos]; + tbl->buf[1] = '\0'; + (*pos)++; + } + return(c); + } + + /* + * Copy words into a nil-terminated buffer. For now, we use a + * static buffer. FIXME: eventually this should be made into a + * dynamic one living in struct tbl. + */ + + for (i = 0; i < BUFSIZ; i++, (*pos)++) + if (TBL_TOK__MAX == tbl_next_char(p[*pos])) + tbl->buf[i] = p[*pos]; + else + break; + + assert(i < BUFSIZ); + tbl->buf[i] = '\0'; + + return(TBL_TOK__MAX); +} + + |