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/*
* sactstring.c: SACTの文字列操作関連
*
* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
* 1998- <masaki-c@is.aist-nara.ac.jp>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* $Id: sactstring.c,v 1.1 2003/11/09 15:06:12 chikama Exp $ */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "portab.h"
#include "system.h"
#include "list.h"
#include "variable.h"
// 文字列置換用
typedef struct {
char *src; // 置き換え元文字列
char *dst; // 置き換え文字列
} strexchange_t;
#define DEFSTACKSIZE 100
static char **stack; // stack本体
static int idx; // stack pointer
static int idxmax; // stack pointerの最大
// 文字列置き換え用 (表示時にon-the-flyで変換して表示)
#define REPLACEBUFSIZE 3000
static char repbuf[2][REPLACEBUFSIZE];
static SList *strreplace;
static char *replacesrc;
static char *replacedst;
/**
* 文字列変数スタックの初期化
*/
void nt_sstr_init(void) {
stack = malloc(sizeof(char *) * DEFSTACKSIZE);
idx = 0;
idxmax = DEFSTACKSIZE;
}
void nt_sstr_reset(void) {
for (int i = 0; i < idx; i++)
free(stack[i]);
idx = 0;
free(stack);
stack = NULL;
for (SList *l = strreplace; l; l = l->next) {
strexchange_t *ex = l->data;
free(ex->src);
free(ex->dst);
free(ex);
}
slist_free(strreplace);
strreplace = NULL;
}
/**
* 文字列の置き換え
* @param sstrno: 変換元文字列変数番号
* @param dstrno: 変換先文字列変数番号
*/
void nt_sstr_regist_replace(char *sstr, char *dstr) {
strexchange_t *ex;
if (sstr == dstr) return;
ex = malloc(sizeof(strexchange_t));
ex->src = sstr;
ex->dst = dstr;
strreplace = slist_append(strreplace, ex);
}
// 文字列の置き換え処理
static void replacestr_cb(void* data, void* userdata) {
strexchange_t *ex = (strexchange_t *)data;
char *start, *next, *out;
if (ex == NULL) return;
start = replacesrc;
out = replacedst;
while (true) {
next = strstr(start, ex->src);
if (next == NULL) break;
strncat(out, start, (size_t)(next - start));
strncat(out, ex->dst, max(0, (REPLACEBUFSIZE - (int)strlen(out))));
start = next + strlen(ex->src);
}
strncat(out, start, max(0, REPLACEBUFSIZE - (int)strlen(out)));
replacedst = replacesrc;
replacesrc = out;
replacedst[0] = '\0';
}
// 文字列の置き換え
char *nt_sstr_replacestr(char *msg) {
if (strreplace == NULL) return msg;
repbuf[0][0] = '\0';
repbuf[1][0] = '\0';
strncpy(repbuf[0], msg, REPLACEBUFSIZE);
replacesrc = repbuf[0];
replacedst = repbuf[1];
slist_foreach(strreplace, replacestr_cb, NULL);
return (repbuf[0][0] == '\0') ? repbuf[1] : repbuf[0];
}
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