1 %option nostdinit noyywrap never-interactive full ecs
2 %option 8bit nodefault perf-report perf-report
4 %x COMMAND HELP STRING PARAM
7 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
8 * Released under the terms of the GNU GPL v2.0.
21 #define START_STRSIZE 16
29 static int text_size, text_asize;
32 struct buffer *parent;
33 YY_BUFFER_STATE state;
36 struct buffer *current_buf;
38 static int last_ts, first_ts;
40 static void zconf_endhelp(void);
41 static void zconf_endfile(void);
43 static void new_string(void)
45 text = xmalloc(START_STRSIZE);
46 text_asize = START_STRSIZE;
51 static void append_string(const char *str, int size)
53 int new_size = text_size + size + 1;
54 if (new_size > text_asize) {
55 new_size += START_STRSIZE - 1;
56 new_size &= -START_STRSIZE;
57 text = realloc(text, new_size);
58 text_asize = new_size;
60 memcpy(text + text_size, str, size);
65 static void alloc_string(const char *str, int size)
67 text = xmalloc(size + 1);
68 memcpy(text, str, size);
81 current_file->lineno++;
99 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
101 current_pos.file = current_file;
102 current_pos.lineno = current_file->lineno;
103 if (id && id->flags & TF_COMMAND) {
107 alloc_string(yytext, yyleng);
108 zconflval.string = text;
114 current_file->lineno++;
122 "(" return T_OPEN_PAREN;
123 ")" return T_CLOSE_PAREN;
126 "!=" return T_UNEQUAL;
132 \n BEGIN(INITIAL); current_file->lineno++; return T_EOL;
135 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
136 if (id && id->flags & TF_PARAM) {
140 alloc_string(yytext, yyleng);
141 zconflval.string = text;
145 \\\n current_file->lineno++;
154 append_string(yytext, yyleng);
155 zconflval.string = text;
159 append_string(yytext, yyleng);
162 append_string(yytext + 1, yyleng - 1);
163 zconflval.string = text;
167 append_string(yytext + 1, yyleng - 1);
170 if (str == yytext[0]) {
172 zconflval.string = text;
175 append_string(yytext, 1);
178 printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
179 current_file->lineno++;
191 for (i = 0; i < yyleng; i++) {
192 if (yytext[i] == '\t')
205 append_string(" ", 8);
208 append_string(" ", ts);
212 current_file->lineno++;
217 current_file->lineno++;
218 append_string("\n", 1);
222 if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
226 append_string(yytext, yyleng);
246 void zconf_starthelp(void)
249 last_ts = first_ts = 0;
253 static void zconf_endhelp(void)
255 zconflval.string = text;
261 * Try to open specified file with following names:
264 * The latter is used when srctree is separate from objtree
265 * when compiling the kernel.
266 * Return NULL if file is not found.
268 FILE *zconf_fopen(const char *name)
270 char *env, fullname[PATH_MAX+1];
273 f = fopen(name, "r");
274 if (!f && name != NULL && name[0] != '/') {
275 env = getenv(SRCTREE);
277 sprintf(fullname, "%s/%s", env, name);
278 f = fopen(fullname, "r");
284 void zconf_initscan(const char *name)
286 yyin = zconf_fopen(name);
288 printf("can't find file %s\n", name);
292 current_buf = xmalloc(sizeof(*current_buf));
293 memset(current_buf, 0, sizeof(*current_buf));
295 current_file = file_lookup(name);
296 current_file->lineno = 1;
299 static void __zconf_nextfile(const char *name)
302 struct file *file = file_lookup(name);
303 struct buffer *buf = xmalloc(sizeof(*buf));
304 memset(buf, 0, sizeof(*buf));
306 current_buf->state = YY_CURRENT_BUFFER;
307 yyin = zconf_fopen(file->name);
309 printf("%s:%d: can't open file \"%s\"\n",
310 zconf_curname(), zconf_lineno(), file->name);
313 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
314 buf->parent = current_buf;
317 for (iter = current_file->parent; iter; iter = iter->parent ) {
318 if (!strcmp(current_file->name,iter->name) ) {
319 printf("%s:%d: recursive inclusion detected. "
320 "Inclusion path:\n current file : '%s'\n",
321 zconf_curname(), zconf_lineno(),
323 iter = current_file->parent;
325 strcmp(iter->name,current_file->name)) {
326 printf(" included from: '%s:%d'\n",
327 iter->name, iter->lineno-1);
331 printf(" included from: '%s:%d'\n",
332 iter->name, iter->lineno+1);
337 file->parent = current_file;
341 void zconf_nextfile(const char *name)
346 char path[PATH_MAX], *p;
348 err = glob(name, GLOB_ERR | GLOB_MARK, NULL, &gl);
350 /* ignore wildcard patterns that return no result */
351 if (err == GLOB_NOMATCH && strchr(name, '*')) {
356 if (err == GLOB_NOMATCH) {
357 p = strdup(current_file->name);
359 snprintf(path, sizeof(path), "%s/%s", dirname(p), name);
360 err = glob(path, GLOB_ERR | GLOB_MARK, NULL, &gl);
366 const char *reason = "unknown error";
370 reason = "out of memory";
373 reason = "read error";
376 reason = "No files found";
382 printf("%s:%d: glob failed: %s \"%s\"\n", zconf_curname(), zconf_lineno(),
388 for (i = 0; i < gl.gl_pathc; i++)
389 __zconf_nextfile(gl.gl_pathv[i]);
392 static void zconf_endfile(void)
394 struct buffer *parent;
396 current_file = current_file->parent;
398 parent = current_buf->parent;
401 yy_delete_buffer(YY_CURRENT_BUFFER);
402 yy_switch_to_buffer(parent->state);
405 current_buf = parent;
408 int zconf_lineno(void)
410 return current_pos.lineno;
413 const char *zconf_curname(void)
415 return current_pos.file ? current_pos.file->name : "<none>";