patch-2.4.8 linux/arch/s390/tools/silo/cfg.c

• Lines: 374
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.7/linux/arch/s390/tools/silo/cfg.c
• Orig date: Fri May 12 11:41:45 2000

diff -u --recursive --new-file v2.4.7/linux/arch/s390/tools/silo/cfg.c linux/arch/s390/tools/silo/cfg.c
@@ -1,373 +0,0 @@
-/* cfg.c  -  Configuration file parser */
-
-/* Copyright 1992-1997 Werner Almesberger. See file COPYING for details. */
-
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <ctype.h>
-#include <string.h>
-
-#include "cfg.h"
-
-#define MAX_TOKEN 200
-#define MAX_VAR_NAME MAX_TOKEN
-
-static FILE *file;
-static char flag_set;
-static char *last_token = NULL,*last_item = NULL,*last_value = NULL;
-static int line_num;
-static char *file_name = NULL;
-static int back = 0; /* can go back by one char */
-
-
-void pdie(char *msg)
-{
-    fflush(stdout);
-    perror(msg);
-    exit(1);
-}
-
-
-void die(char *fmt,...)
-{
-    va_list ap;
-
-    fflush(stdout);
-    va_start(ap,fmt);
-    vfprintf(stderr,fmt,ap);
-    va_end(ap);
-    fputc('\n',stderr);
-    exit(1);
-}
-
-char *pstrdup(const char *str)
-{
-    char *this;
-
-    if ((this = strdup(str)) == NULL) pdie("Out of memory");
-    return this;
-}
-
-int cfg_open(char *name)
-{
-    if (!strcmp(name,"-")) file = stdin;
-    else if (!(file = fopen(file_name = name,"r"))) pdie(name);
-    line_num = 1;
-    return fileno(file);
-}
-
-void cfg_error(char *msg,...)
-{
-    va_list ap;
-
-    fflush(stdout);
-    va_start(ap,msg);
-    vfprintf(stderr,msg,ap);
-    va_end(ap);
-    if (!file_name) fputc('\n',stderr);
-    else fprintf(stderr," near line %d in file %s\n",line_num,file_name);
-    exit(1);
-}
-
-
-static int next_raw(void)
-{
-    int ch;
-
-    if (!back) return getc(file);
-    ch = back;
-    back = 0;
-    return ch;
-}
-
-
-static int next(void)
-{
-    static char *var;
-    char buffer[MAX_VAR_NAME+1];
-    int ch,braced;
-    char *put;
-
-    if (back) {
-	ch = back;
-	back = 0;
-	return ch;
-    }
-    if (var && *var) return *var++;
-    ch = getc(file);
-    if (ch == '\\') {
-	ch = getc(file);
-	if (ch == '$') return ch;
-	ungetc(ch,file);
-	return '\\';
-    }
-    if (ch != '$') return ch;
-    ch = getc(file);
-    braced = ch == '{';
-    put = buffer;
-    if (!braced) *put++ = ch;
-    while (1) {
-	ch = getc(file);
-#if 0
-	if (!braced && ch < ' ') {
-	    ungetc(ch,file);
-	    break;
-	}
-#endif
-	if (ch == EOF) cfg_error("EOF in variable name");
-	if (ch < ' ') cfg_error("control character in variable name");
-	if (braced && ch == '}') break;
-	if (!braced && !isalpha(ch) && !isdigit(ch) && ch != '_') {
-	    ungetc(ch,file);
-	    break;
-	}
-	if (put-buffer == MAX_VAR_NAME) cfg_error("variable name too long");
-	*put++ = ch;
-    }
-    *put = 0;
-    if (!(var = getenv(buffer))) cfg_error("unknown variable \"%s\"",buffer);
-    return next();
-}
-
-
-static void again(int ch)
-{
-    if (back) die("internal error: again invoked twice");
-    back = ch;
-}
-
-
-static char *cfg_get_token(void)
-{
-    char buf[MAX_TOKEN+1];
-    char *here;
-    int ch,escaped;
-
-    if (last_token) {
-	here = last_token;
-	last_token = NULL;
-	return here;
-    }
-    while (1) {
-	while ((ch = next()), ch == ' ' || ch == '\t' || ch == '\n')
-	    if (ch == '\n') line_num++;
-	if (ch == EOF) return NULL;
-	if (ch != '#') break;
-	while ((ch = next_raw()), ch != '\n')
-	    if (ch == EOF) return NULL;
-	line_num++;
-    }
-    if (ch == '=') return pstrdup("=");
-    if (ch == '"') {
-	here = buf;
-	while (here-buf < MAX_TOKEN) {
-	    if ((ch = next()) == EOF) cfg_error("EOF in quoted string");
-	    if (ch == '"') {
-		*here = 0;
-		return pstrdup(buf);
-	    }
-	    if (ch == '\\') {
-		ch = next();
-		if (ch != '"' && ch != '\\' && ch != '\n')
-		    cfg_error("Bad use of \\ in quoted string");
-		if (ch == '\n') {
-		    while ((ch = next()), ch == ' ' || ch == '\t');
-		    if (!ch) continue;
-		    again(ch);
-		    ch = ' ';
-		}
-	    }
-	    if (ch == '\n' || ch == '\t')
-		cfg_error("\\n and \\t are not allowed in quoted strings");
-	    *here++ = ch;
-	}
-	cfg_error("Quoted string is too long");
-	return 0; /* not reached */
-    }
-    here = buf;
-    escaped = 0;
-    while (here-buf < MAX_TOKEN) {
-	if (escaped) {
-	    if (ch == EOF) cfg_error("\\ precedes EOF");
-	    if (ch == '\n') line_num++;
-	    else *here++ = ch == '\t' ? ' ' : ch;
-	    escaped = 0;
-	}
-	else {
-	    if (ch == ' ' || ch == '\t' || ch == '\n' || ch == '#' ||
-	      ch == '=' || ch == EOF) {
-		again(ch);
-		*here = 0;
-		return pstrdup(buf);
-	    }
-	    if (!(escaped = (ch == '\\'))) *here++ = ch;
-	}
-	ch = next();
-    }
-    cfg_error("Token is too long");
-    return 0; /* not reached */
-}
-
-
-static void cfg_return_token(char *token)
-{
-    last_token = token;
-}
-
-
-static int cfg_next(char **item,char **value)
-{
-    char *this;
-
-    if (last_item) {
-	*item = last_item;
-	*value = last_value;
-	last_item = NULL;
-	return 1;
-    }
-    *value = NULL;
-    if (!(*item = cfg_get_token())) return 0;
-    if (!strcmp(*item,"=")) cfg_error("Syntax error");
-    if (!(this = cfg_get_token())) return 1;
-    if (strcmp(this,"=")) {
-	cfg_return_token(this);
-	return 1;
-    }
-    if (!(*value = cfg_get_token())) cfg_error("Value expected at EOF");
-    if (!strcmp(*value,"=")) cfg_error("Syntax error after %s",*item);
-    return 1;
-}
-
-
-static void cfg_return(char *item,char *value)
-{
-    last_item = item;
-    last_value = value;
-}
-
-
-void cfg_init(CONFIG *table)
-{
-    while (table->type != cft_end) {
-	switch (table->type) {
-	    case cft_strg:
-		if (table->data) free(table->data);
-	    case cft_flag:
-		table->data = NULL;
-		break;
-	    case cft_link:
-		table = ((CONFIG *) table->action)-1;
-		break;
-	    default:
-		die("Unknown syntax code %d",table->type);
-	}
-	table++;
-    }
-}
-
-
-static int cfg_do_set(CONFIG *table,char *item,char *value,int copy,
-    void *context)
-{
-    CONFIG *walk;
-
-    for (walk = table; walk->type != cft_end; walk++) {
-	if (walk->name && !strcasecmp(walk->name,item)) {
-	    if (value && walk->type != cft_strg)
-		cfg_error("'%s' doesn't have a value",walk->name);
-	    if (!value && walk->type == cft_strg)
-		cfg_error("Value expected for '%s'",walk->name);
-	    if (walk->data) {
-		if (walk->context == context)
-		    cfg_error("Duplicate entry '%s'",walk->name);
-		else {
-		    fprintf(stderr,"Ignoring entry '%s'\n",walk->name);
-		    if (!copy) free(value);
-		    return 1;
-		}
-	    }
-	    if (walk->type == cft_flag) walk->data = &flag_set;
-	    else if (walk->type == cft_strg) {
-		    if (copy) walk->data = pstrdup(value);
-		    else walk->data = value;
-	    }
-	    walk->context = context;
-	    if (walk->action) ((void (*)(void)) walk->action)();
-	    break;
-	}
-	if (walk->type == cft_link) walk = ((CONFIG *) walk->action)-1;
-    }
-    if (walk->type != cft_end) return 1;
-    cfg_return(item,value);
-    return 0;
-}
-
-
-void cfg_set(CONFIG *table,char *item,char *value,void *context)
-{
-    if (!cfg_do_set(table,item,value,1,context))
-	cfg_error("cfg_set: Can't set %s",item);
-}
-
-
-void cfg_unset(CONFIG *table,char *item)
-{
-    CONFIG *walk;
-
-    for (walk = table; walk->type != cft_end; walk++)
-	if (walk->name && !strcasecmp(walk->name,item)) {
-	    if (!walk->data) die("internal error (cfg_unset %s, unset)",item);
-	    if (walk->type == cft_strg) free(walk->data);
-	    walk->data = NULL;
-	    return;
-	}
-    die("internal error (cfg_unset %s, unknown",item);
-}
-
-
-int cfg_parse(CONFIG *table)
-{
-    char *item,*value;
-
-    while (1) {
-	if (!cfg_next(&item,&value)) return 0;
-	if (!cfg_do_set(table,item,value,0,table)) return 1;
-	free(item);
-    }
-}
-
-
-int cfg_get_flag(CONFIG *table,char *item)
-{
-    CONFIG *walk;
-
-    for (walk = table; walk->type != cft_end; walk++) {
-	if (walk->name && !strcasecmp(walk->name,item)) {
-	    if (walk->type != cft_flag)
-		die("cfg_get_flag: operating on non-flag %s",item);
-	    return !!walk->data;
-	}
-	if (walk->type == cft_link) walk = ((CONFIG *) walk->action)-1;
-    }
-    die("cfg_get_flag: unknown item %s",item);
-    return 0; /* not reached */
-}
-
-
-char *cfg_get_strg(CONFIG *table,char *item)
-{
-    CONFIG *walk;
-
-    for (walk = table; walk->type != cft_end; walk++) {
-	if (walk->name && !strcasecmp(walk->name,item)) {
-	    if (walk->type != cft_strg)
-		die("cfg_get_strg: operating on non-string %s",item);
-	    return walk->data;
-	}
-	if (walk->type == cft_link) walk = ((CONFIG *) walk->action)-1;
-    }
-    die("cfg_get_strg: unknown item %s",item);
-    return 0; /* not reached */
-}