+++ /dev/null
-%option nostdinit noyywrap never-interactive full ecs
-%option 8bit nodefault yylineno
-%x COMMAND HELP STRING PARAM
-%{
-/*
- * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
- * Released under the terms of the GNU GPL v2.0.
- */
-
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "lkc.h"
-
-#define START_STRSIZE 16
-
-static struct {
- struct file *file;
- int lineno;
-} current_pos;
-
-static char *text;
-static int text_size, text_asize;
-
-struct buffer {
- struct buffer *parent;
- YY_BUFFER_STATE state;
-};
-
-struct buffer *current_buf;
-
-static int last_ts, first_ts;
-
-static char *expand_token(const char *in, size_t n);
-static void append_expanded_string(const char *in);
-static void zconf_endhelp(void);
-static void zconf_endfile(void);
-
-static void new_string(void)
-{
- text = xmalloc(START_STRSIZE);
- text_asize = START_STRSIZE;
- text_size = 0;
- *text = 0;
-}
-
-static void append_string(const char *str, int size)
-{
- int new_size = text_size + size + 1;
- if (new_size > text_asize) {
- new_size += START_STRSIZE - 1;
- new_size &= -START_STRSIZE;
- text = xrealloc(text, new_size);
- text_asize = new_size;
- }
- memcpy(text + text_size, str, size);
- text_size += size;
- text[text_size] = 0;
-}
-
-static void alloc_string(const char *str, int size)
-{
- text = xmalloc(size + 1);
- memcpy(text, str, size);
- text[size] = 0;
-}
-
-static void warn_ignored_character(char chr)
-{
- fprintf(stderr,
- "%s:%d:warning: ignoring unsupported character '%c'\n",
- zconf_curname(), zconf_lineno(), chr);
-}
-%}
-
-n [A-Za-z0-9_-]
-
-%%
- int str = 0;
- int ts, i;
-
-[ \t]*#.*\n |
-[ \t]*\n {
- return T_EOL;
-}
-[ \t]*#.*
-
-
-[ \t]+ {
- BEGIN(COMMAND);
-}
-
-. {
- unput(yytext[0]);
- BEGIN(COMMAND);
-}
-
-
-<COMMAND>{
- {n}+ {
- const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
- current_pos.file = current_file;
- current_pos.lineno = yylineno;
- if (id && id->flags & TF_COMMAND) {
- BEGIN(PARAM);
- yylval.id = id;
- return id->token;
- }
- alloc_string(yytext, yyleng);
- yylval.string = text;
- return T_WORD;
- }
- . warn_ignored_character(*yytext);
- \n {
- BEGIN(INITIAL);
- return T_EOL;
- }
-}
-
-<PARAM>{
- "&&" return T_AND;
- "||" return T_OR;
- "(" return T_OPEN_PAREN;
- ")" return T_CLOSE_PAREN;
- "!" return T_NOT;
- "=" return T_EQUAL;
- "!=" return T_UNEQUAL;
- "<=" return T_LESS_EQUAL;
- ">=" return T_GREATER_EQUAL;
- "<" return T_LESS;
- ">" return T_GREATER;
- \"|\' {
- str = yytext[0];
- new_string();
- BEGIN(STRING);
- }
- \n BEGIN(INITIAL); return T_EOL;
- ({n}|[/.])+ {
- const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
- if (id && id->flags & TF_PARAM) {
- yylval.id = id;
- return id->token;
- }
- alloc_string(yytext, yyleng);
- yylval.string = text;
- return T_WORD;
- }
- ({n}|[/.$])+ {
- /* this token includes at least one '$' */
- yylval.string = expand_token(yytext, yyleng);
- if (strlen(yylval.string))
- return T_WORD;
- free(yylval.string);
- }
- #.* /* comment */
- \\\n ;
- [[:blank:]]+
- . warn_ignored_character(*yytext);
- <<EOF>> {
- BEGIN(INITIAL);
- }
-}
-
-<STRING>{
- "$".* append_expanded_string(yytext);
- [^$'"\\\n]+/\n {
- append_string(yytext, yyleng);
- yylval.string = text;
- return T_WORD_QUOTE;
- }
- [^$'"\\\n]+ {
- append_string(yytext, yyleng);
- }
- \\.?/\n {
- append_string(yytext + 1, yyleng - 1);
- yylval.string = text;
- return T_WORD_QUOTE;
- }
- \\.? {
- append_string(yytext + 1, yyleng - 1);
- }
- \'|\" {
- if (str == yytext[0]) {
- BEGIN(PARAM);
- yylval.string = text;
- return T_WORD_QUOTE;
- } else
- append_string(yytext, 1);
- }
- \n {
- fprintf(stderr,
- "%s:%d:warning: multi-line strings not supported\n",
- zconf_curname(), zconf_lineno());
- BEGIN(INITIAL);
- return T_EOL;
- }
- <<EOF>> {
- BEGIN(INITIAL);
- }
-}
-
-<HELP>{
- [ \t]+ {
- ts = 0;
- for (i = 0; i < yyleng; i++) {
- if (yytext[i] == '\t')
- ts = (ts & ~7) + 8;
- else
- ts++;
- }
- last_ts = ts;
- if (first_ts) {
- if (ts < first_ts) {
- zconf_endhelp();
- return T_HELPTEXT;
- }
- ts -= first_ts;
- while (ts > 8) {
- append_string(" ", 8);
- ts -= 8;
- }
- append_string(" ", ts);
- }
- }
- [ \t]*\n/[^ \t\n] {
- zconf_endhelp();
- return T_HELPTEXT;
- }
- [ \t]*\n {
- append_string("\n", 1);
- }
- [^ \t\n].* {
- while (yyleng) {
- if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
- break;
- yyleng--;
- }
- append_string(yytext, yyleng);
- if (!first_ts)
- first_ts = last_ts;
- }
- <<EOF>> {
- zconf_endhelp();
- return T_HELPTEXT;
- }
-}
-
-<<EOF>> {
- if (current_file) {
- zconf_endfile();
- return T_EOL;
- }
- fclose(yyin);
- yyterminate();
-}
-
-%%
-static char *expand_token(const char *in, size_t n)
-{
- char *out;
- int c;
- char c2;
- const char *rest, *end;
-
- new_string();
- append_string(in, n);
-
- /* get the whole line because we do not know the end of token. */
- while ((c = input()) != EOF) {
- if (c == '\n') {
- unput(c);
- break;
- }
- c2 = c;
- append_string(&c2, 1);
- }
-
- rest = text;
- out = expand_one_token(&rest);
-
- /* push back unused characters to the input stream */
- end = rest + strlen(rest);
- while (end > rest)
- unput(*--end);
-
- free(text);
-
- return out;
-}
-
-static void append_expanded_string(const char *str)
-{
- const char *end;
- char *res;
-
- str++;
-
- res = expand_dollar(&str);
-
- /* push back unused characters to the input stream */
- end = str + strlen(str);
- while (end > str)
- unput(*--end);
-
- append_string(res, strlen(res));
-
- free(res);
-}
-
-void zconf_starthelp(void)
-{
- new_string();
- last_ts = first_ts = 0;
- BEGIN(HELP);
-}
-
-static void zconf_endhelp(void)
-{
- yylval.string = text;
- BEGIN(INITIAL);
-}
-
-
-/*
- * Try to open specified file with following names:
- * ./name
- * $(srctree)/name
- * The latter is used when srctree is separate from objtree
- * when compiling the firmware.
- * Return NULL if file is not found.
- */
-FILE *zconf_fopen(const char *name)
-{
- char *env, fullname[PATH_MAX+1];
- FILE *f;
-
- f = fopen(name, "r");
- if (!f && name != NULL && name[0] != '/') {
- env = getenv(SRCTREE);
- if (env) {
- sprintf(fullname, "%s/%s", env, name);
- f = fopen(fullname, "r");
- }
- }
- return f;
-}
-
-void zconf_initscan(const char *name)
-{
- yyin = zconf_fopen(name);
- if (!yyin) {
- fprintf(stderr, "can't find file %s\n", name);
- exit(1);
- }
-
- current_buf = xmalloc(sizeof(*current_buf));
- memset(current_buf, 0, sizeof(*current_buf));
-
- current_file = file_lookup(name);
- yylineno = 1;
-}
-
-void zconf_nextfile(const char *name)
-{
- struct file *iter;
- struct file *file = file_lookup(name);
- struct buffer *buf = xmalloc(sizeof(*buf));
- memset(buf, 0, sizeof(*buf));
-
- current_buf->state = YY_CURRENT_BUFFER;
- yyin = zconf_fopen(file->name);
- if (!yyin) {
- fprintf(stderr, "%s:%d: can't open file \"%s\"\n",
- zconf_curname(), zconf_lineno(), file->name);
- exit(1);
- }
- yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
- buf->parent = current_buf;
- current_buf = buf;
-
- current_file->lineno = yylineno;
- file->parent = current_file;
-
- for (iter = current_file; iter; iter = iter->parent) {
- if (!strcmp(iter->name, file->name)) {
- fprintf(stderr,
- "Recursive inclusion detected.\n"
- "Inclusion path:\n"
- " current file : %s\n", file->name);
- iter = file;
- do {
- iter = iter->parent;
- fprintf(stderr, " included from: %s:%d\n",
- iter->name, iter->lineno - 1);
- } while (strcmp(iter->name, file->name));
- exit(1);
- }
- }
-
- yylineno = 1;
- current_file = file;
-}
-
-static void zconf_endfile(void)
-{
- struct buffer *parent;
-
- current_file = current_file->parent;
- if (current_file)
- yylineno = current_file->lineno;
-
- parent = current_buf->parent;
- if (parent) {
- fclose(yyin);
- yy_delete_buffer(YY_CURRENT_BUFFER);
- yy_switch_to_buffer(parent->state);
- }
- free(current_buf);
- current_buf = parent;
-}
-
-int zconf_lineno(void)
-{
- return current_pos.lineno;
-}
-
-const char *zconf_curname(void)
-{
- return current_pos.file ? current_pos.file->name : "<none>";
-}
projects / carl9170fw.git / blobdiff