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- %option backup nostdinit noyywrap full ecs
- %option 8bit backup nodefault perf-report perf-report
- %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 <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #define LKC_DIRECT_LINK
- #include "lkc.h"
- #include "zconf.tab.h"
- #define START_STRSIZE 16
- char *text;
- static char *text_ptr;
- 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 void zconf_endhelp(void);
- static struct buffer *zconf_endfile(void);
- void new_string(void)
- {
- text = malloc(START_STRSIZE);
- text_asize = START_STRSIZE;
- text_ptr = text;
- text_size = 0;
- *text_ptr = 0;
- }
- void append_string(const char *str, int size)
- {
- int new_size = text_size + size + 1;
- if (new_size > text_asize) {
- text = realloc(text, new_size);
- text_asize = new_size;
- text_ptr = text + text_size;
- }
- memcpy(text_ptr, str, size);
- text_ptr += size;
- text_size += size;
- *text_ptr = 0;
- }
- void alloc_string(const char *str, int size)
- {
- text = malloc(size + 1);
- memcpy(text, str, size);
- text[size] = 0;
- }
- %}
- ws [ \n\t]
- n [A-Za-z0-9_]
- %%
- int str = 0;
- int ts, i;
- [ \t]*#.*\n current_file->lineno++;
- [ \t]*#.*
- [ \t]*\n current_file->lineno++; return T_EOL;
- [ \t]+ {
- BEGIN(COMMAND);
- }
- . {
- unput(yytext[0]);
- //printf("new config: ");
- //symbol_end(NULL);
- BEGIN(COMMAND);
- }
- <COMMAND>{
- "mainmenu" BEGIN(PARAM); return T_MAINMENU;
- "menu" BEGIN(PARAM); return T_MENU;
- "endmenu" BEGIN(PARAM); return T_ENDMENU;
- "source" BEGIN(PARAM); return T_SOURCE;
- "choice" BEGIN(PARAM); return T_CHOICE;
- "endchoice" BEGIN(PARAM); return T_ENDCHOICE;
- "comment" BEGIN(PARAM); return T_COMMENT;
- "config" BEGIN(PARAM); return T_CONFIG;
- "help" BEGIN(PARAM); return T_HELP;
- "if" BEGIN(PARAM); return T_IF;
- "endif" BEGIN(PARAM); return T_ENDIF;
- "depends" BEGIN(PARAM); return T_DEPENDS;
- "requires" BEGIN(PARAM); return T_REQUIRES;
- "optional" BEGIN(PARAM); return T_OPTIONAL;
- "default" BEGIN(PARAM); return T_DEFAULT;
- "prompt" BEGIN(PARAM); return T_PROMPT;
- "tristate" BEGIN(PARAM); return T_TRISTATE;
- "bool" BEGIN(PARAM); return T_BOOLEAN;
- "boolean" BEGIN(PARAM); return T_BOOLEAN;
- "int" BEGIN(PARAM); return T_INT;
- "hex" BEGIN(PARAM); return T_HEX;
- "string" BEGIN(PARAM); return T_STRING;
- {n}+ {
- alloc_string(yytext, yyleng);
- zconflval.string = text;
- return T_WORD;
- }
- .
- \n current_file->lineno++; BEGIN(INITIAL);
- }
- <PARAM>{
- "&&" return T_AND;
- "||" return T_OR;
- "(" return T_OPEN_PAREN;
- ")" return T_CLOSE_PAREN;
- "!" return T_NOT;
- "=" return T_EQUAL;
- "!=" return T_UNEQUAL;
- "if" return T_IF;
- "on" return T_ON;
- \"|\' {
- str = yytext[0];
- new_string();
- BEGIN(STRING);
- }
- \n BEGIN(INITIAL); current_file->lineno++; return T_EOL;
- --- /* ignore */
- ({n}|[-/.])+ {
- alloc_string(yytext, yyleng);
- zconflval.string = text;
- return T_WORD;
- }
- .
- }
- <STRING>{
- [^'"\n\\]+ {
- append_string(yytext, yyleng);
- }
- \'|\" {
- if (str == yytext[0]) {
- BEGIN(PARAM);
- zconflval.string = text;
- //printf("s:%s\n", text);
- return T_STRING;
- } else
- append_string(yytext, 1);
- }
- \\[ \t]*\n append_string(yytext+yyleng-1, 1); current_file->lineno++;
- \\[ \t]* append_string(yytext+1, yyleng-1);
- \\. append_string(yytext+1, 1);
- \n {
- //printf(":%d: open string!\n", current_file->lineno+1);
- exit(0);
- }
- <<EOF>> {
- //printf(":%d: open string!\n", current_file->lineno+1);
- exit(0);
- }
- }
- <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);
- }
-
- }
- \n/[^ \t\n] {
- current_file->lineno++;
- zconf_endhelp();
- return T_HELPTEXT;
- }
- [ \t]*\n {
- current_file->lineno++;
- append_string("\n", 1);
- }
- [^ \t\n].* {
- append_string(yytext, yyleng);
- if (!first_ts)
- first_ts = last_ts;
- }
- <<EOF>> {
- zconf_endhelp();
- return T_HELPTEXT;
- }
- }
- <<EOF>> {
- if (current_buf) {
- zconf_endfile();
- return T_EOF;
- }
- yyterminate();
- }
- %%
- void zconf_starthelp(void)
- {
- new_string();
- last_ts = first_ts = 0;
- BEGIN(HELP);
- }
- static void zconf_endhelp(void)
- {
- zconflval.string = text;
- BEGIN(INITIAL);
- }
- void zconf_initscan(const char *name)
- {
- yyin = fopen(name, "r");
- if (!yyin) {
- printf("can't find file %s\n", name);
- exit(1);
- }
- //fprintf(stderr, "zconf_initscan: %s\n", name);
- current_buf = malloc(sizeof(*current_buf));
- memset(current_buf, 0, sizeof(*current_buf));
- current_file = file_lookup(name);
- current_file->lineno = 1;
- current_file->flags = FILE_BUSY;
- }
- void zconf_nextfile(const char *name)
- {
- struct file *file = file_lookup(name);
- struct buffer *buf = malloc(sizeof(*buf));
- memset(buf, 0, sizeof(*buf));
- current_buf->state = YY_CURRENT_BUFFER;
- yyin = fopen(name, "r");
- if (!yyin) {
- printf("%s:%d: can't open file \"%s\"\n", zconf_curname(), zconf_lineno(), name);
- exit(1);
- }
- yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
- buf->parent = current_buf;
- current_buf = buf;
- //fprintf(stderr, "zconf_nextfile: %s\n", name);
- if (file->flags & FILE_BUSY) {
- printf("recursive scan (%s)?\n", name);
- exit(1);
- }
- if (file->flags & FILE_SCANNED) {
- printf("file %s already scanned?\n", name);
- exit(1);
- }
- file->flags |= FILE_BUSY;
- file->lineno = 1;
- file->parent = current_file;
- current_file = file;
- }
- static struct buffer *zconf_endfile(void)
- {
- struct buffer *parent;
- current_file->flags |= FILE_SCANNED;
- current_file->flags &= ~FILE_BUSY;
- current_file = current_file->parent;
- parent = current_buf->parent;
- if (parent) {
- yy_delete_buffer(YY_CURRENT_BUFFER);
- yy_switch_to_buffer(parent->state);
- }
- free(current_buf);
- current_buf = parent;
- return parent;
- }
- int zconf_lineno(void)
- {
- if (current_buf)
- return current_file->lineno;
- else
- return 0;
- }
- char *zconf_curname(void)
- {
- if (current_buf)
- return current_file->name;
- else
- return "<none>";
- }
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