Loading...
1%option nostdinit noyywrap never-interactive full ecs
2%option 8bit nodefault perf-report perf-report
3%option noinput
4%x COMMAND HELP STRING PARAM
5%{
6/*
7 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
8 * Released under the terms of the GNU GPL v2.0.
9 */
10
11#include <limits.h>
12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include <unistd.h>
16
17#include "lkc.h"
18
19#define START_STRSIZE 16
20
21static struct {
22 struct file *file;
23 int lineno;
24} current_pos;
25
26static char *text;
27static int text_size, text_asize;
28
29struct buffer {
30 struct buffer *parent;
31 YY_BUFFER_STATE state;
32};
33
34struct buffer *current_buf;
35
36static int last_ts, first_ts;
37
38static void zconf_endhelp(void);
39static void zconf_endfile(void);
40
41static void new_string(void)
42{
43 text = xmalloc(START_STRSIZE);
44 text_asize = START_STRSIZE;
45 text_size = 0;
46 *text = 0;
47}
48
49static void append_string(const char *str, int size)
50{
51 int new_size = text_size + size + 1;
52 if (new_size > text_asize) {
53 new_size += START_STRSIZE - 1;
54 new_size &= -START_STRSIZE;
55 text = realloc(text, new_size);
56 text_asize = new_size;
57 }
58 memcpy(text + text_size, str, size);
59 text_size += size;
60 text[text_size] = 0;
61}
62
63static void alloc_string(const char *str, int size)
64{
65 text = xmalloc(size + 1);
66 memcpy(text, str, size);
67 text[size] = 0;
68}
69
70static void warn_ignored_character(char chr)
71{
72 fprintf(stderr,
73 "%s:%d:warning: ignoring unsupported character '%c'\n",
74 zconf_curname(), zconf_lineno(), chr);
75}
76%}
77
78n [A-Za-z0-9_-]
79
80%%
81 int str = 0;
82 int ts, i;
83
84[ \t]*#.*\n |
85[ \t]*\n {
86 current_file->lineno++;
87 return T_EOL;
88}
89[ \t]*#.*
90
91
92[ \t]+ {
93 BEGIN(COMMAND);
94}
95
96. {
97 unput(yytext[0]);
98 BEGIN(COMMAND);
99}
100
101
102<COMMAND>{
103 {n}+ {
104 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
105 BEGIN(PARAM);
106 current_pos.file = current_file;
107 current_pos.lineno = current_file->lineno;
108 if (id && id->flags & TF_COMMAND) {
109 zconflval.id = id;
110 return id->token;
111 }
112 alloc_string(yytext, yyleng);
113 zconflval.string = text;
114 return T_WORD;
115 }
116 . warn_ignored_character(*yytext);
117 \n {
118 BEGIN(INITIAL);
119 current_file->lineno++;
120 return T_EOL;
121 }
122}
123
124<PARAM>{
125 "&&" return T_AND;
126 "||" return T_OR;
127 "(" return T_OPEN_PAREN;
128 ")" return T_CLOSE_PAREN;
129 "!" return T_NOT;
130 "=" return T_EQUAL;
131 "!=" return T_UNEQUAL;
132 "<=" return T_LESS_EQUAL;
133 ">=" return T_GREATER_EQUAL;
134 "<" return T_LESS;
135 ">" return T_GREATER;
136 \"|\' {
137 str = yytext[0];
138 new_string();
139 BEGIN(STRING);
140 }
141 \n BEGIN(INITIAL); current_file->lineno++; return T_EOL;
142 ({n}|[/.])+ {
143 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
144 if (id && id->flags & TF_PARAM) {
145 zconflval.id = id;
146 return id->token;
147 }
148 alloc_string(yytext, yyleng);
149 zconflval.string = text;
150 return T_WORD;
151 }
152 #.* /* comment */
153 \\\n current_file->lineno++;
154 [[:blank:]]+
155 . warn_ignored_character(*yytext);
156 <<EOF>> {
157 BEGIN(INITIAL);
158 }
159}
160
161<STRING>{
162 [^'"\\\n]+/\n {
163 append_string(yytext, yyleng);
164 zconflval.string = text;
165 return T_WORD_QUOTE;
166 }
167 [^'"\\\n]+ {
168 append_string(yytext, yyleng);
169 }
170 \\.?/\n {
171 append_string(yytext + 1, yyleng - 1);
172 zconflval.string = text;
173 return T_WORD_QUOTE;
174 }
175 \\.? {
176 append_string(yytext + 1, yyleng - 1);
177 }
178 \'|\" {
179 if (str == yytext[0]) {
180 BEGIN(PARAM);
181 zconflval.string = text;
182 return T_WORD_QUOTE;
183 } else
184 append_string(yytext, 1);
185 }
186 \n {
187 printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
188 current_file->lineno++;
189 BEGIN(INITIAL);
190 return T_EOL;
191 }
192 <<EOF>> {
193 BEGIN(INITIAL);
194 }
195}
196
197<HELP>{
198 [ \t]+ {
199 ts = 0;
200 for (i = 0; i < yyleng; i++) {
201 if (yytext[i] == '\t')
202 ts = (ts & ~7) + 8;
203 else
204 ts++;
205 }
206 last_ts = ts;
207 if (first_ts) {
208 if (ts < first_ts) {
209 zconf_endhelp();
210 return T_HELPTEXT;
211 }
212 ts -= first_ts;
213 while (ts > 8) {
214 append_string(" ", 8);
215 ts -= 8;
216 }
217 append_string(" ", ts);
218 }
219 }
220 [ \t]*\n/[^ \t\n] {
221 current_file->lineno++;
222 zconf_endhelp();
223 return T_HELPTEXT;
224 }
225 [ \t]*\n {
226 current_file->lineno++;
227 append_string("\n", 1);
228 }
229 [^ \t\n].* {
230 while (yyleng) {
231 if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
232 break;
233 yyleng--;
234 }
235 append_string(yytext, yyleng);
236 if (!first_ts)
237 first_ts = last_ts;
238 }
239 <<EOF>> {
240 zconf_endhelp();
241 return T_HELPTEXT;
242 }
243}
244
245<<EOF>> {
246 if (current_file) {
247 zconf_endfile();
248 return T_EOL;
249 }
250 fclose(yyin);
251 yyterminate();
252}
253
254%%
255void zconf_starthelp(void)
256{
257 new_string();
258 last_ts = first_ts = 0;
259 BEGIN(HELP);
260}
261
262static void zconf_endhelp(void)
263{
264 zconflval.string = text;
265 BEGIN(INITIAL);
266}
267
268
269/*
270 * Try to open specified file with following names:
271 * ./name
272 * $(srctree)/name
273 * The latter is used when srctree is separate from objtree
274 * when compiling the kernel.
275 * Return NULL if file is not found.
276 */
277FILE *zconf_fopen(const char *name)
278{
279 char *env, fullname[PATH_MAX+1];
280 FILE *f;
281
282 f = fopen(name, "r");
283 if (!f && name != NULL && name[0] != '/') {
284 env = getenv(SRCTREE);
285 if (env) {
286 sprintf(fullname, "%s/%s", env, name);
287 f = fopen(fullname, "r");
288 }
289 }
290 return f;
291}
292
293void zconf_initscan(const char *name)
294{
295 yyin = zconf_fopen(name);
296 if (!yyin) {
297 printf("can't find file %s\n", name);
298 exit(1);
299 }
300
301 current_buf = xmalloc(sizeof(*current_buf));
302 memset(current_buf, 0, sizeof(*current_buf));
303
304 current_file = file_lookup(name);
305 current_file->lineno = 1;
306}
307
308void zconf_nextfile(const char *name)
309{
310 struct file *iter;
311 struct file *file = file_lookup(name);
312 struct buffer *buf = xmalloc(sizeof(*buf));
313 memset(buf, 0, sizeof(*buf));
314
315 current_buf->state = YY_CURRENT_BUFFER;
316 yyin = zconf_fopen(file->name);
317 if (!yyin) {
318 printf("%s:%d: can't open file \"%s\"\n",
319 zconf_curname(), zconf_lineno(), file->name);
320 exit(1);
321 }
322 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
323 buf->parent = current_buf;
324 current_buf = buf;
325
326 for (iter = current_file->parent; iter; iter = iter->parent ) {
327 if (!strcmp(current_file->name,iter->name) ) {
328 printf("%s:%d: recursive inclusion detected. "
329 "Inclusion path:\n current file : '%s'\n",
330 zconf_curname(), zconf_lineno(),
331 zconf_curname());
332 iter = current_file->parent;
333 while (iter && \
334 strcmp(iter->name,current_file->name)) {
335 printf(" included from: '%s:%d'\n",
336 iter->name, iter->lineno-1);
337 iter = iter->parent;
338 }
339 if (iter)
340 printf(" included from: '%s:%d'\n",
341 iter->name, iter->lineno+1);
342 exit(1);
343 }
344 }
345 file->lineno = 1;
346 file->parent = current_file;
347 current_file = file;
348}
349
350static void zconf_endfile(void)
351{
352 struct buffer *parent;
353
354 current_file = current_file->parent;
355
356 parent = current_buf->parent;
357 if (parent) {
358 fclose(yyin);
359 yy_delete_buffer(YY_CURRENT_BUFFER);
360 yy_switch_to_buffer(parent->state);
361 }
362 free(current_buf);
363 current_buf = parent;
364}
365
366int zconf_lineno(void)
367{
368 return current_pos.lineno;
369}
370
371const char *zconf_curname(void)
372{
373 return current_pos.file ? current_pos.file->name : "<none>";
374}
1%option nostdinit noyywrap never-interactive full ecs
2%option 8bit nodefault perf-report perf-report
3%option noinput
4%x COMMAND HELP STRING PARAM
5%{
6/*
7 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
8 * Released under the terms of the GNU GPL v2.0.
9 */
10
11#include <limits.h>
12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include <unistd.h>
16
17#include "lkc.h"
18
19#define START_STRSIZE 16
20
21static struct {
22 struct file *file;
23 int lineno;
24} current_pos;
25
26static char *text;
27static int text_size, text_asize;
28
29struct buffer {
30 struct buffer *parent;
31 YY_BUFFER_STATE state;
32};
33
34struct buffer *current_buf;
35
36static int last_ts, first_ts;
37
38static void zconf_endhelp(void);
39static void zconf_endfile(void);
40
41static void new_string(void)
42{
43 text = malloc(START_STRSIZE);
44 text_asize = START_STRSIZE;
45 text_size = 0;
46 *text = 0;
47}
48
49static void append_string(const char *str, int size)
50{
51 int new_size = text_size + size + 1;
52 if (new_size > text_asize) {
53 new_size += START_STRSIZE - 1;
54 new_size &= -START_STRSIZE;
55 text = realloc(text, new_size);
56 text_asize = new_size;
57 }
58 memcpy(text + text_size, str, size);
59 text_size += size;
60 text[text_size] = 0;
61}
62
63static void alloc_string(const char *str, int size)
64{
65 text = malloc(size + 1);
66 memcpy(text, str, size);
67 text[size] = 0;
68}
69%}
70
71ws [ \n\t]
72n [A-Za-z0-9_]
73
74%%
75 int str = 0;
76 int ts, i;
77
78[ \t]*#.*\n |
79[ \t]*\n {
80 current_file->lineno++;
81 return T_EOL;
82}
83[ \t]*#.*
84
85
86[ \t]+ {
87 BEGIN(COMMAND);
88}
89
90. {
91 unput(yytext[0]);
92 BEGIN(COMMAND);
93}
94
95
96<COMMAND>{
97 {n}+ {
98 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
99 BEGIN(PARAM);
100 current_pos.file = current_file;
101 current_pos.lineno = current_file->lineno;
102 if (id && id->flags & TF_COMMAND) {
103 zconflval.id = id;
104 return id->token;
105 }
106 alloc_string(yytext, yyleng);
107 zconflval.string = text;
108 return T_WORD;
109 }
110 .
111 \n {
112 BEGIN(INITIAL);
113 current_file->lineno++;
114 return T_EOL;
115 }
116}
117
118<PARAM>{
119 "&&" return T_AND;
120 "||" return T_OR;
121 "(" return T_OPEN_PAREN;
122 ")" return T_CLOSE_PAREN;
123 "!" return T_NOT;
124 "=" return T_EQUAL;
125 "!=" return T_UNEQUAL;
126 \"|\' {
127 str = yytext[0];
128 new_string();
129 BEGIN(STRING);
130 }
131 \n BEGIN(INITIAL); current_file->lineno++; return T_EOL;
132 --- /* ignore */
133 ({n}|[-/.])+ {
134 const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
135 if (id && id->flags & TF_PARAM) {
136 zconflval.id = id;
137 return id->token;
138 }
139 alloc_string(yytext, yyleng);
140 zconflval.string = text;
141 return T_WORD;
142 }
143 #.* /* comment */
144 \\\n current_file->lineno++;
145 .
146 <<EOF>> {
147 BEGIN(INITIAL);
148 }
149}
150
151<STRING>{
152 [^'"\\\n]+/\n {
153 append_string(yytext, yyleng);
154 zconflval.string = text;
155 return T_WORD_QUOTE;
156 }
157 [^'"\\\n]+ {
158 append_string(yytext, yyleng);
159 }
160 \\.?/\n {
161 append_string(yytext + 1, yyleng - 1);
162 zconflval.string = text;
163 return T_WORD_QUOTE;
164 }
165 \\.? {
166 append_string(yytext + 1, yyleng - 1);
167 }
168 \'|\" {
169 if (str == yytext[0]) {
170 BEGIN(PARAM);
171 zconflval.string = text;
172 return T_WORD_QUOTE;
173 } else
174 append_string(yytext, 1);
175 }
176 \n {
177 printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
178 current_file->lineno++;
179 BEGIN(INITIAL);
180 return T_EOL;
181 }
182 <<EOF>> {
183 BEGIN(INITIAL);
184 }
185}
186
187<HELP>{
188 [ \t]+ {
189 ts = 0;
190 for (i = 0; i < yyleng; i++) {
191 if (yytext[i] == '\t')
192 ts = (ts & ~7) + 8;
193 else
194 ts++;
195 }
196 last_ts = ts;
197 if (first_ts) {
198 if (ts < first_ts) {
199 zconf_endhelp();
200 return T_HELPTEXT;
201 }
202 ts -= first_ts;
203 while (ts > 8) {
204 append_string(" ", 8);
205 ts -= 8;
206 }
207 append_string(" ", ts);
208 }
209 }
210 [ \t]*\n/[^ \t\n] {
211 current_file->lineno++;
212 zconf_endhelp();
213 return T_HELPTEXT;
214 }
215 [ \t]*\n {
216 current_file->lineno++;
217 append_string("\n", 1);
218 }
219 [^ \t\n].* {
220 while (yyleng) {
221 if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
222 break;
223 yyleng--;
224 }
225 append_string(yytext, yyleng);
226 if (!first_ts)
227 first_ts = last_ts;
228 }
229 <<EOF>> {
230 zconf_endhelp();
231 return T_HELPTEXT;
232 }
233}
234
235<<EOF>> {
236 if (current_file) {
237 zconf_endfile();
238 return T_EOL;
239 }
240 fclose(yyin);
241 yyterminate();
242}
243
244%%
245void zconf_starthelp(void)
246{
247 new_string();
248 last_ts = first_ts = 0;
249 BEGIN(HELP);
250}
251
252static void zconf_endhelp(void)
253{
254 zconflval.string = text;
255 BEGIN(INITIAL);
256}
257
258
259/*
260 * Try to open specified file with following names:
261 * ./name
262 * $(srctree)/name
263 * The latter is used when srctree is separate from objtree
264 * when compiling the kernel.
265 * Return NULL if file is not found.
266 */
267FILE *zconf_fopen(const char *name)
268{
269 char *env, fullname[PATH_MAX+1];
270 FILE *f;
271
272 f = fopen(name, "r");
273 if (!f && name != NULL && name[0] != '/') {
274 env = getenv(SRCTREE);
275 if (env) {
276 sprintf(fullname, "%s/%s", env, name);
277 f = fopen(fullname, "r");
278 }
279 }
280 return f;
281}
282
283void zconf_initscan(const char *name)
284{
285 yyin = zconf_fopen(name);
286 if (!yyin) {
287 printf("can't find file %s\n", name);
288 exit(1);
289 }
290
291 current_buf = malloc(sizeof(*current_buf));
292 memset(current_buf, 0, sizeof(*current_buf));
293
294 current_file = file_lookup(name);
295 current_file->lineno = 1;
296}
297
298void zconf_nextfile(const char *name)
299{
300 struct file *iter;
301 struct file *file = file_lookup(name);
302 struct buffer *buf = malloc(sizeof(*buf));
303 memset(buf, 0, sizeof(*buf));
304
305 current_buf->state = YY_CURRENT_BUFFER;
306 yyin = zconf_fopen(file->name);
307 if (!yyin) {
308 printf("%s:%d: can't open file \"%s\"\n",
309 zconf_curname(), zconf_lineno(), file->name);
310 exit(1);
311 }
312 yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
313 buf->parent = current_buf;
314 current_buf = buf;
315
316 for (iter = current_file->parent; iter; iter = iter->parent ) {
317 if (!strcmp(current_file->name,iter->name) ) {
318 printf("%s:%d: recursive inclusion detected. "
319 "Inclusion path:\n current file : '%s'\n",
320 zconf_curname(), zconf_lineno(),
321 zconf_curname());
322 iter = current_file->parent;
323 while (iter && \
324 strcmp(iter->name,current_file->name)) {
325 printf(" included from: '%s:%d'\n",
326 iter->name, iter->lineno-1);
327 iter = iter->parent;
328 }
329 if (iter)
330 printf(" included from: '%s:%d'\n",
331 iter->name, iter->lineno+1);
332 exit(1);
333 }
334 }
335 file->lineno = 1;
336 file->parent = current_file;
337 current_file = file;
338}
339
340static void zconf_endfile(void)
341{
342 struct buffer *parent;
343
344 current_file = current_file->parent;
345
346 parent = current_buf->parent;
347 if (parent) {
348 fclose(yyin);
349 yy_delete_buffer(YY_CURRENT_BUFFER);
350 yy_switch_to_buffer(parent->state);
351 }
352 free(current_buf);
353 current_buf = parent;
354}
355
356int zconf_lineno(void)
357{
358 return current_pos.lineno;
359}
360
361const char *zconf_curname(void)
362{
363 return current_pos.file ? current_pos.file->name : "<none>";
364}