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4b10dd6c | 1 | /* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. |
c84142e8 | 2 | This file is part of the GNU C Library. |
4b10dd6c | 3 | Contributed by Ulrich Drepper, <drepper@gnu.org>. |
c84142e8 UD |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19bc17a9 RM |
19 | |
20 | #ifndef _LINEREADER_H | |
21 | #define _LINEREADER_H 1 | |
22 | ||
23 | #include <ctype.h> | |
24 | #include <libintl.h> | |
4b10dd6c | 25 | #include <stdint.h> |
19bc17a9 RM |
26 | #include <stdio.h> |
27 | ||
4b10dd6c | 28 | #include "charmap.h" |
19bc17a9 RM |
29 | #include "error.h" |
30 | #include "locfile-token.h" | |
4b10dd6c | 31 | #include "repertoire.h" |
19bc17a9 RM |
32 | |
33 | ||
4b10dd6c | 34 | typedef const struct keyword_t *(*kw_hash_fct_t) (const char *, unsigned int); |
19bc17a9 RM |
35 | struct charset_t; |
36 | ||
37 | ||
38 | struct token | |
39 | { | |
40 | enum token_t tok; | |
41 | union | |
42 | { | |
43 | struct | |
44 | { | |
4b10dd6c UD |
45 | char *startmb; |
46 | size_t lenmb; | |
47 | uint32_t *startwc; | |
48 | size_t lenwc; | |
19bc17a9 RM |
49 | } str; |
50 | unsigned long int num; | |
51 | struct | |
52 | { | |
4b10dd6c UD |
53 | /* This element is sized on the safe expectation that no single |
54 | character in any character set uses more then 16 bytes. */ | |
55 | unsigned char bytes[16]; | |
19bc17a9 RM |
56 | int nbytes; |
57 | } charcode; | |
4b10dd6c | 58 | uint32_t ucs4; |
19bc17a9 RM |
59 | } val; |
60 | }; | |
61 | ||
62 | ||
63 | struct linereader | |
64 | { | |
65 | FILE *fp; | |
66 | const char *fname; | |
67 | char *buf; | |
68 | size_t bufsize; | |
69 | size_t bufact; | |
70 | size_t lineno; | |
71 | ||
72 | size_t idx; | |
73 | ||
74 | char comment_char; | |
75 | char escape_char; | |
76 | ||
77 | struct token token; | |
78 | ||
79 | int translate_strings; | |
4b10dd6c | 80 | int return_widestr; |
19bc17a9 RM |
81 | |
82 | kw_hash_fct_t hash_fct; | |
83 | }; | |
84 | ||
85 | ||
86 | /* Functions defined in linereader.c. */ | |
4b10dd6c UD |
87 | extern struct linereader *lr_open (const char *fname, kw_hash_fct_t hf); |
88 | extern int lr_eof (struct linereader *lr); | |
89 | extern void lr_close (struct linereader *lr); | |
90 | extern int lr_next (struct linereader *lr); | |
91 | extern struct token *lr_token (struct linereader *lr, | |
92 | const struct charmap_t *charmap, | |
93 | const struct repertoire_t *repertoire); | |
19bc17a9 RM |
94 | |
95 | ||
96 | #define lr_error(lr, fmt, args...) \ | |
97 | error_at_line (0, 0, lr->fname, lr->lineno, fmt, ## args) | |
98 | ||
99 | ||
100 | ||
101 | static inline int | |
102 | lr_getc (struct linereader *lr) | |
103 | { | |
104 | if (lr->idx == lr->bufact) | |
105 | { | |
106 | if (lr->bufact != 0) | |
107 | if (lr_next (lr) < 0) | |
108 | return EOF; | |
109 | ||
110 | if (lr->bufact == 0) | |
111 | return EOF; | |
112 | } | |
113 | ||
114 | return lr->buf[lr->idx] == '\32' ? EOF : lr->buf[lr->idx++]; | |
115 | } | |
116 | ||
117 | ||
118 | static inline int | |
119 | lr_ungetc (struct linereader *lr, int ch) | |
120 | { | |
121 | if (lr->idx == 0) | |
122 | return -1; | |
123 | ||
124 | lr->buf[--lr->idx] = ch; | |
125 | return 0; | |
126 | } | |
127 | ||
128 | ||
129 | static inline int | |
ba1ffaa1 | 130 | lr_ungetn (struct linereader *lr, size_t n) |
19bc17a9 RM |
131 | { |
132 | if (lr->idx < n) | |
133 | return -1; | |
134 | ||
135 | lr->idx -= n; | |
136 | return 0; | |
137 | } | |
138 | ||
139 | ||
140 | static inline void | |
141 | lr_ignore_rest (struct linereader *lr, int verbose) | |
142 | { | |
143 | if (verbose) | |
144 | { | |
145 | while (isspace (lr->buf[lr->idx]) && lr->buf[lr->idx] != '\n' | |
146 | && lr->buf[lr->idx] != lr->comment_char) | |
147 | if (lr->buf[lr->idx] == '\0') | |
148 | { | |
149 | if (lr_next (lr) < 0) | |
150 | return; | |
151 | } | |
152 | else | |
153 | ++lr->idx; | |
154 | ||
155 | if (lr->buf[lr->idx] != '\n' &&lr->buf[lr->idx] != lr->comment_char) | |
156 | lr_error (lr, _("trailing garbage at end of line")); | |
157 | } | |
158 | ||
159 | /* Ignore continued line. */ | |
160 | while (lr->bufact > 0 && lr->buf[lr->bufact - 1] != '\n') | |
161 | if (lr_next (lr) < 0) | |
162 | break; | |
163 | ||
164 | lr->idx = lr->bufact; | |
165 | } | |
166 | ||
167 | ||
168 | #endif /* linereader.h */ |