| -rw-r--r-- | scripts/kconfig/zconf.l | 72 |
1 files changed, 54 insertions, 18 deletions
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l index 6d81e5e..1471630 100644 --- a/scripts/kconfig/zconf.l +++ b/scripts/kconfig/zconf.l @@ -1,41 +1,41 @@ -%option backup nostdinit noyywrap full ecs +%option backup nostdinit noyywrap never-interactive 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 <limits.h> #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; @@ -62,50 +62,48 @@ 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; @@ -122,74 +120,88 @@ n [A-Za-z0-9_] } <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; } + \\\n current_file->lineno++; . + <<EOF>> { + BEGIN(INITIAL); + } } <STRING>{ - [^'"\n\\]+ { + [^'"\\\n]+/\n { + append_string(yytext, yyleng); + zconflval.string = text; + return T_STRING; + } + [^'"\\\n]+ { append_string(yytext, yyleng); } + \\.?/\n { + append_string(yytext + 1, yyleng - 1); + zconflval.string = text; + return T_STRING; + } + \\.? { + append_string(yytext + 1, yyleng - 1); + } \'|\" { 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); + printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno()); + current_file->lineno++; + BEGIN(INITIAL); + return T_EOL; } <<EOF>> { - //printf(":%d: open string!\n", current_file->lineno+1); - exit(0); + 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); @@ -200,124 +212,148 @@ n [A-Za-z0-9_] 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; } + fclose(yyin); yyterminate(); } %% void zconf_starthelp(void) { new_string(); last_ts = first_ts = 0; BEGIN(HELP); } static void zconf_endhelp(void) { zconflval.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 kernel. + * 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[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 = fopen(name, "r"); + yyin = zconf_fopen(name); 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"); + yyin = zconf_fopen(name); 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) { + fclose(yyin); 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>"; } |