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commit 5453a3df2a5eb49bc24615d4cf0d66b2aae05e5f
parent add8462a60421ca1b03a6864e295d22de532a5e7
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Wed, 13 Mar 2019 10:06:28 -0700

Merge tag 'kconfig-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kconfig updates from Masahiro Yamada:

 - rename lexer and parse files

 - fix 'Save as' menu of xconfig

* tag 'kconfig-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: fix 'Save As' menu of xconfig
  kconfig: rename zconf.y to parser.y
  kconfig: rename zconf.l to lexer.l

Diffstat:
Mscripts/kconfig/Makefile | 9+++++----
Mscripts/kconfig/expr.h | 2+-
Ascripts/kconfig/lexer.l | 470+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mscripts/kconfig/lkc.h | 2+-
Rscripts/kconfig/zconf.y -> scripts/kconfig/parser.y | 0
Mscripts/kconfig/qconf.cc | 42+++++++++++++++++++++++++++++++++++-------
Mscripts/kconfig/qconf.h | 1+
Dscripts/kconfig/zconf.l | 470-------------------------------------------------------------------------------
8 files changed, 513 insertions(+), 483 deletions(-)

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile @@ -143,11 +143,12 @@ help: # =========================================================================== # object files used by all kconfig flavours -common-objs := confdata.o expr.o symbol.o preprocess.o zconf.lex.o zconf.tab.o +common-objs := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \ + symbol.o -$(obj)/zconf.lex.o: $(obj)/zconf.tab.h -HOSTCFLAGS_zconf.lex.o := -I$(src) -HOSTCFLAGS_zconf.tab.o := -I$(src) +$(obj)/lexer.lex.o: $(obj)/parser.tab.h +HOSTCFLAGS_lexer.lex.o := -I$(src) +HOSTCFLAGS_parser.tab.o := -I$(src) # conf: Used for defconfig, oldconfig and related targets hostprogs-y += conf diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h @@ -172,7 +172,7 @@ struct symbol { * int "BAZ Value" * range 1..255 * - * Please, also check zconf.y:print_symbol() when modifying the + * Please, also check parser.y:print_symbol() when modifying the * list of property types! */ enum prop_type { diff --git a/scripts/kconfig/lexer.l b/scripts/kconfig/lexer.l @@ -0,0 +1,470 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> + */ +%option nostdinit noyywrap never-interactive full ecs +%option 8bit nodefault yylineno +%x ASSIGN_VAL HELP STRING +%{ + +#include <assert.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "lkc.h" +#include "parser.tab.h" + +#define YY_DECL static int yylex1(void) + +#define START_STRSIZE 16 + +static struct { + struct file *file; + int lineno; +} current_pos; + +static int prev_prev_token = T_EOL; +static int prev_token = T_EOL; +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", + current_file->name, yylineno, chr); +} +%} + +n [A-Za-z0-9_-] + +%% + int str = 0; + int ts, i; + +#.* /* ignore comment */ +[ \t]* /* whitespaces */ +\\\n /* escaped new line */ +\n return T_EOL; +"allnoconfig_y" return T_ALLNOCONFIG_Y; +"bool" return T_BOOL; +"choice" return T_CHOICE; +"comment" return T_COMMENT; +"config" return T_CONFIG; +"def_bool" return T_DEF_BOOL; +"def_tristate" return T_DEF_TRISTATE; +"default" return T_DEFAULT; +"defconfig_list" return T_DEFCONFIG_LIST; +"depends" return T_DEPENDS; +"endchoice" return T_ENDCHOICE; +"endif" return T_ENDIF; +"endmenu" return T_ENDMENU; +"help"|"---help---" return T_HELP; +"hex" return T_HEX; +"if" return T_IF; +"imply" return T_IMPLY; +"int" return T_INT; +"mainmenu" return T_MAINMENU; +"menu" return T_MENU; +"menuconfig" return T_MENUCONFIG; +"modules" return T_MODULES; +"on" return T_ON; +"option" return T_OPTION; +"optional" return T_OPTIONAL; +"prompt" return T_PROMPT; +"range" return T_RANGE; +"select" return T_SELECT; +"source" return T_SOURCE; +"string" return T_STRING; +"tristate" return T_TRISTATE; +"visible" return T_VISIBLE; +"||" return T_OR; +"&&" return T_AND; +"=" return T_EQUAL; +"!=" return T_UNEQUAL; +"<" return T_LESS; +"<=" return T_LESS_EQUAL; +">" return T_GREATER; +">=" return T_GREATER_EQUAL; +"!" return T_NOT; +"(" return T_OPEN_PAREN; +")" return T_CLOSE_PAREN; +":=" return T_COLON_EQUAL; +"+=" return T_PLUS_EQUAL; +\"|\' { + str = yytext[0]; + new_string(); + BEGIN(STRING); + } +{n}+ { + alloc_string(yytext, yyleng); + yylval.string = text; + return T_WORD; + } +({n}|$)+ { + /* this token includes at least one '$' */ + yylval.string = expand_token(yytext, yyleng); + if (strlen(yylval.string)) + return T_WORD; + free(yylval.string); + } +. warn_ignored_character(*yytext); + +<ASSIGN_VAL>{ + [^[:blank:]\n]+.* { + alloc_string(yytext, yyleng); + yylval.string = text; + return T_ASSIGN_VAL; + } + \n { BEGIN(INITIAL); return T_EOL; } + . +} + +<STRING>{ + "$".* append_expanded_string(yytext); + [^$'"\\\n]+ { + append_string(yytext, yyleng); + } + \\.? { + append_string(yytext + 1, yyleng - 1); + } + \'|\" { + if (str == yytext[0]) { + BEGIN(INITIAL); + 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()); + unput('\n'); + BEGIN(INITIAL); + yylval.string = text; + return T_WORD_QUOTE; + } + <<EOF>> { + BEGIN(INITIAL); + yylval.string = text; + return T_WORD_QUOTE; + } +} + +<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>> { + BEGIN(INITIAL); + + if (prev_token != T_EOL && prev_token != T_HELPTEXT) + fprintf(stderr, "%s:%d:warning: no new line at end of file\n", + current_file->name, yylineno); + + if (current_file) { + zconf_endfile(); + return T_EOL; + } + fclose(yyin); + yyterminate(); +} + +%% + +/* second stage lexer */ +int yylex(void) +{ + int token; + +repeat: + token = yylex1(); + + if (prev_token == T_EOL || prev_token == T_HELPTEXT) { + if (token == T_EOL) { + /* Do not pass unneeded T_EOL to the parser. */ + goto repeat; + } else { + /* + * For the parser, update file/lineno at the first token + * of each statement. Generally, \n is a statement + * terminator in Kconfig, but it is not always true + * because \n could be escaped by a backslash. + */ + current_pos.file = current_file; + current_pos.lineno = yylineno; + } + } + + if (prev_prev_token == T_EOL && prev_token == T_WORD && + (token == T_EQUAL || token == T_COLON_EQUAL || token == T_PLUS_EQUAL)) + BEGIN(ASSIGN_VAL); + + prev_prev_token = prev_token; + prev_token = token; + + return token; +} + +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 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 != 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>"; +} diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h @@ -90,7 +90,7 @@ void *xrealloc(void *p, size_t size); char *xstrdup(const char *s); char *xstrndup(const char *s, size_t n); -/* zconf.l */ +/* lexer.l */ int yylex(void); struct gstr { diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/parser.y diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc @@ -1392,6 +1392,8 @@ ConfigMainWindow::ConfigMainWindow(void) conf_set_changed_callback(conf_changed); // Set saveAction's initial state conf_changed(); + configname = xstrdup(conf_get_configname()); + QAction *saveAsAction = new QAction("Save &As...", this); connect(saveAsAction, SIGNAL(triggered(bool)), SLOT(saveConfigAs())); QAction *searchAction = new QAction("&Find", this); @@ -1520,17 +1522,29 @@ ConfigMainWindow::ConfigMainWindow(void) void ConfigMainWindow::loadConfig(void) { - QString s = QFileDialog::getOpenFileName(this, "", conf_get_configname()); - if (s.isNull()) + QString str; + QByteArray ba; + const char *name; + + str = QFileDialog::getOpenFileName(this, "", configname); + if (str.isNull()) return; - if (conf_read(QFile::encodeName(s))) + + ba = str.toLocal8Bit(); + name = ba.data(); + + if (conf_read(name)) QMessageBox::information(this, "qconf", "Unable to load configuration!"); + + free(configname); + configname = xstrdup(name); + ConfigView::updateListAll(); } bool ConfigMainWindow::saveConfig(void) { - if (conf_write(NULL)) { + if (conf_write(configname)) { QMessageBox::information(this, "qconf", "Unable to save configuration!"); return false; } @@ -1541,10 +1555,24 @@ bool ConfigMainWindow::saveConfig(void) void ConfigMainWindow::saveConfigAs(void) { - QString s = QFileDialog::getSaveFileName(this, "", conf_get_configname()); - if (s.isNull()) + QString str; + QByteArray ba; + const char *name; + + str = QFileDialog::getSaveFileName(this, "", configname); + if (str.isNull()) return; - saveConfig(); + + ba = str.toLocal8Bit(); + name = ba.data(); + + if (conf_write(name)) { + QMessageBox::information(this, "qconf", "Unable to save configuration!"); + } + conf_write_autoconf(0); + + free(configname); + configname = xstrdup(name); } void ConfigMainWindow::searchConfig(void) diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h @@ -291,6 +291,7 @@ protected: class ConfigMainWindow : public QMainWindow { Q_OBJECT + char *configname; static QAction *saveAction; static void conf_changed(void); public: diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l @@ -1,470 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> - */ -%option nostdinit noyywrap never-interactive full ecs -%option 8bit nodefault yylineno -%x ASSIGN_VAL HELP STRING -%{ - -#include <assert.h> -#include <limits.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include "lkc.h" -#include "zconf.tab.h" - -#define YY_DECL static int yylex1(void) - -#define START_STRSIZE 16 - -static struct { - struct file *file; - int lineno; -} current_pos; - -static int prev_prev_token = T_EOL; -static int prev_token = T_EOL; -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", - current_file->name, yylineno, chr); -} -%} - -n [A-Za-z0-9_-] - -%% - int str = 0; - int ts, i; - -#.* /* ignore comment */ -[ \t]* /* whitespaces */ -\\\n /* escaped new line */ -\n return T_EOL; -"allnoconfig_y" return T_ALLNOCONFIG_Y; -"bool" return T_BOOL; -"choice" return T_CHOICE; -"comment" return T_COMMENT; -"config" return T_CONFIG; -"def_bool" return T_DEF_BOOL; -"def_tristate" return T_DEF_TRISTATE; -"default" return T_DEFAULT; -"defconfig_list" return T_DEFCONFIG_LIST; -"depends" return T_DEPENDS; -"endchoice" return T_ENDCHOICE; -"endif" return T_ENDIF; -"endmenu" return T_ENDMENU; -"help"|"---help---" return T_HELP; -"hex" return T_HEX; -"if" return T_IF; -"imply" return T_IMPLY; -"int" return T_INT; -"mainmenu" return T_MAINMENU; -"menu" return T_MENU; -"menuconfig" return T_MENUCONFIG; -"modules" return T_MODULES; -"on" return T_ON; -"option" return T_OPTION; -"optional" return T_OPTIONAL; -"prompt" return T_PROMPT; -"range" return T_RANGE; -"select" return T_SELECT; -"source" return T_SOURCE; -"string" return T_STRING; -"tristate" return T_TRISTATE; -"visible" return T_VISIBLE; -"||" return T_OR; -"&&" return T_AND; -"=" return T_EQUAL; -"!=" return T_UNEQUAL; -"<" return T_LESS; -"<=" return T_LESS_EQUAL; -">" return T_GREATER; -">=" return T_GREATER_EQUAL; -"!" return T_NOT; -"(" return T_OPEN_PAREN; -")" return T_CLOSE_PAREN; -":=" return T_COLON_EQUAL; -"+=" return T_PLUS_EQUAL; -\"|\' { - str = yytext[0]; - new_string(); - BEGIN(STRING); - } -{n}+ { - alloc_string(yytext, yyleng); - yylval.string = text; - return T_WORD; - } -({n}|$)+ { - /* this token includes at least one '$' */ - yylval.string = expand_token(yytext, yyleng); - if (strlen(yylval.string)) - return T_WORD; - free(yylval.string); - } -. warn_ignored_character(*yytext); - -<ASSIGN_VAL>{ - [^[:blank:]\n]+.* { - alloc_string(yytext, yyleng); - yylval.string = text; - return T_ASSIGN_VAL; - } - \n { BEGIN(INITIAL); return T_EOL; } - . -} - -<STRING>{ - "$".* append_expanded_string(yytext); - [^$'"\\\n]+ { - append_string(yytext, yyleng); - } - \\.? { - append_string(yytext + 1, yyleng - 1); - } - \'|\" { - if (str == yytext[0]) { - BEGIN(INITIAL); - 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()); - unput('\n'); - BEGIN(INITIAL); - yylval.string = text; - return T_WORD_QUOTE; - } - <<EOF>> { - BEGIN(INITIAL); - yylval.string = text; - return T_WORD_QUOTE; - } -} - -<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>> { - BEGIN(INITIAL); - - if (prev_token != T_EOL && prev_token != T_HELPTEXT) - fprintf(stderr, "%s:%d:warning: no new line at end of file\n", - current_file->name, yylineno); - - if (current_file) { - zconf_endfile(); - return T_EOL; - } - fclose(yyin); - yyterminate(); -} - -%% - -/* second stage lexer */ -int yylex(void) -{ - int token; - -repeat: - token = yylex1(); - - if (prev_token == T_EOL || prev_token == T_HELPTEXT) { - if (token == T_EOL) { - /* Do not pass unneeded T_EOL to the parser. */ - goto repeat; - } else { - /* - * For the parser, update file/lineno at the first token - * of each statement. Generally, \n is a statement - * terminator in Kconfig, but it is not always true - * because \n could be escaped by a backslash. - */ - current_pos.file = current_file; - current_pos.lineno = yylineno; - } - } - - if (prev_prev_token == T_EOL && prev_token == T_WORD && - (token == T_EQUAL || token == T_COLON_EQUAL || token == T_PLUS_EQUAL)) - BEGIN(ASSIGN_VAL); - - prev_prev_token = prev_token; - prev_token = token; - - return token; -} - -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 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 != 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>"; -}