Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[platform/adaptation/renesas_rcar/renesas_kernel.git] / scripts / dtc / srcpos.c
1 /*
2  * Copyright 2007 Jon Loeliger, Freescale Semiconductor, Inc.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of the
7  * License, or (at your option) any later version.
8  *
9  *  This program is distributed in the hope that it will be useful,
10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  *  General Public License for more details.
13  *
14  *  You should have received a copy of the GNU General Public License
15  *  along with this program; if not, write to the Free Software
16  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
17  *                                                                   USA
18  */
19
20 #define _GNU_SOURCE
21
22 #include <stdio.h>
23
24 #include "dtc.h"
25 #include "srcpos.h"
26
27
28 static char *dirname(const char *path)
29 {
30         const char *slash = strrchr(path, '/');
31
32         if (slash) {
33                 int len = slash - path;
34                 char *dir = xmalloc(len + 1);
35
36                 memcpy(dir, path, len);
37                 dir[len] = '\0';
38                 return dir;
39         }
40         return NULL;
41 }
42
43 FILE *depfile; /* = NULL */
44 struct srcfile_state *current_srcfile; /* = NULL */
45
46 /* Detect infinite include recursion. */
47 #define MAX_SRCFILE_DEPTH     (100)
48 static int srcfile_depth; /* = 0 */
49
50 FILE *srcfile_relative_open(const char *fname, char **fullnamep)
51 {
52         FILE *f;
53         char *fullname;
54
55         if (streq(fname, "-")) {
56                 f = stdin;
57                 fullname = xstrdup("<stdin>");
58         } else {
59                 if (!current_srcfile || !current_srcfile->dir
60                     || (fname[0] == '/'))
61                         fullname = xstrdup(fname);
62                 else
63                         fullname = join_path(current_srcfile->dir, fname);
64
65                 f = fopen(fullname, "r");
66                 if (!f)
67                         die("Couldn't open \"%s\": %s\n", fname,
68                             strerror(errno));
69         }
70
71         if (depfile)
72                 fprintf(depfile, " %s", fullname);
73
74         if (fullnamep)
75                 *fullnamep = fullname;
76         else
77                 free(fullname);
78
79         return f;
80 }
81
82 void srcfile_push(const char *fname)
83 {
84         struct srcfile_state *srcfile;
85
86         if (srcfile_depth++ >= MAX_SRCFILE_DEPTH)
87                 die("Includes nested too deeply");
88
89         srcfile = xmalloc(sizeof(*srcfile));
90
91         srcfile->f = srcfile_relative_open(fname, &srcfile->name);
92         srcfile->dir = dirname(srcfile->name);
93         srcfile->prev = current_srcfile;
94
95         srcfile->lineno = 1;
96         srcfile->colno = 1;
97
98         current_srcfile = srcfile;
99 }
100
101 int srcfile_pop(void)
102 {
103         struct srcfile_state *srcfile = current_srcfile;
104
105         assert(srcfile);
106
107         current_srcfile = srcfile->prev;
108
109         if (fclose(srcfile->f))
110                 die("Error closing \"%s\": %s\n", srcfile->name,
111                     strerror(errno));
112
113         /* FIXME: We allow the srcfile_state structure to leak,
114          * because it could still be referenced from a location
115          * variable being carried through the parser somewhere.  To
116          * fix this we could either allocate all the files from a
117          * table, or use a pool allocator. */
118
119         return current_srcfile ? 1 : 0;
120 }
121
122 /*
123  * The empty source position.
124  */
125
126 struct srcpos srcpos_empty = {
127         .first_line = 0,
128         .first_column = 0,
129         .last_line = 0,
130         .last_column = 0,
131         .file = NULL,
132 };
133
134 #define TAB_SIZE      8
135
136 void srcpos_update(struct srcpos *pos, const char *text, int len)
137 {
138         int i;
139
140         pos->file = current_srcfile;
141
142         pos->first_line = current_srcfile->lineno;
143         pos->first_column = current_srcfile->colno;
144
145         for (i = 0; i < len; i++)
146                 if (text[i] == '\n') {
147                         current_srcfile->lineno++;
148                         current_srcfile->colno = 1;
149                 } else if (text[i] == '\t') {
150                         current_srcfile->colno =
151                                 ALIGN(current_srcfile->colno, TAB_SIZE);
152                 } else {
153                         current_srcfile->colno++;
154                 }
155
156         pos->last_line = current_srcfile->lineno;
157         pos->last_column = current_srcfile->colno;
158 }
159
160 struct srcpos *
161 srcpos_copy(struct srcpos *pos)
162 {
163         struct srcpos *pos_new;
164
165         pos_new = xmalloc(sizeof(struct srcpos));
166         memcpy(pos_new, pos, sizeof(struct srcpos));
167
168         return pos_new;
169 }
170
171
172
173 void
174 srcpos_dump(struct srcpos *pos)
175 {
176         printf("file        : \"%s\"\n",
177                pos->file ? (char *) pos->file : "<no file>");
178         printf("first_line  : %d\n", pos->first_line);
179         printf("first_column: %d\n", pos->first_column);
180         printf("last_line   : %d\n", pos->last_line);
181         printf("last_column : %d\n", pos->last_column);
182         printf("file        : %s\n", pos->file->name);
183 }
184
185
186 char *
187 srcpos_string(struct srcpos *pos)
188 {
189         const char *fname = "<no-file>";
190         char *pos_str;
191         int rc;
192
193         if (pos)
194                 fname = pos->file->name;
195
196
197         if (pos->first_line != pos->last_line)
198                 rc = asprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
199                               pos->first_line, pos->first_column,
200                               pos->last_line, pos->last_column);
201         else if (pos->first_column != pos->last_column)
202                 rc = asprintf(&pos_str, "%s:%d.%d-%d", fname,
203                               pos->first_line, pos->first_column,
204                               pos->last_column);
205         else
206                 rc = asprintf(&pos_str, "%s:%d.%d", fname,
207                               pos->first_line, pos->first_column);
208
209         if (rc == -1)
210                 die("Couldn't allocate in srcpos string");
211
212         return pos_str;
213 }
214
215 void
216 srcpos_verror(struct srcpos *pos, char const *fmt, va_list va)
217 {
218        const char *srcstr;
219
220        srcstr = srcpos_string(pos);
221
222        fprintf(stdout, "Error: %s ", srcstr);
223        vfprintf(stdout, fmt, va);
224        fprintf(stdout, "\n");
225 }
226
227 void
228 srcpos_error(struct srcpos *pos, char const *fmt, ...)
229 {
230         va_list va;
231
232         va_start(va, fmt);
233         srcpos_verror(pos, fmt, va);
234         va_end(va);
235 }
236
237
238 void
239 srcpos_warn(struct srcpos *pos, char const *fmt, ...)
240 {
241         const char *srcstr;
242         va_list va;
243         va_start(va, fmt);
244
245         srcstr = srcpos_string(pos);
246
247         fprintf(stderr, "Warning: %s ", srcstr);
248         vfprintf(stderr, fmt, va);
249         fprintf(stderr, "\n");
250
251         va_end(va);
252 }