From 5345c4c9f6311fa5dc27565a3b26bc5f91d92d7f Mon Sep 17 00:00:00 2001
From: Gluzskiy Alexandr <sss@sss.chaoslab.ru>
Date: Wed, 13 May 2020 13:01:48 +0300
Subject: fixed few possible bugs

---
 main.c | 126 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 main.c

(limited to 'main.c')

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..b56e82b
--- /dev/null
+++ b/main.c
@@ -0,0 +1,126 @@
+// Copyright © 2010-2012 sss
+// 
+// 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.
+
+
+#include <unistd.h>
+#include <stdio.h>
+#include <iconv.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+
+int main(int argc, char **argv)
+{
+	int opt = -1;
+	char ifile[256], ofile[256], fcharset[32], tcharset[32];
+    memset(ifile, 0, sizeof(ifile));
+    memset(ofile, 0, sizeof(ofile));
+    memset(fcharset, 0, sizeof(fcharset));
+    memset(tcharset, 0, sizeof(tcharset));
+
+	ifile[0] = 0;
+	ofile[0] = 0;
+	fcharset[0] = 0;
+	tcharset[0] = 0;
+	while((opt = getopt(argc, argv, "i:o:f:t:")) != -1)
+	{
+		switch(opt)
+		{
+			case 'i':
+			strncpy(ifile, optarg, sizeof(ifile) - 1);
+			break;
+			case 'o':
+			strncpy(ofile, optarg, sizeof(ofile) - 1);
+			break;
+			case 'f':
+			strncpy(fcharset, optarg, sizeof(fcharset) - 1);
+			break;
+			case 't':
+			strncpy(tcharset, optarg, sizeof(tcharset) - 1);
+			break;
+			default:
+			printf("usage: %s -ioft\n\t-i input file\n\t-o output file\n\t-f from charset\n\t-t to charset\n", argv[0]);
+		}
+	}
+	iconv_t id = iconv_open(tcharset, fcharset);
+	if((long)id == -1)
+	{
+		printf("failed to create iconv descriptor with error: %s\n", strerror(errno));
+		return 1;
+	}
+	FILE *in = fopen(ifile, "r");
+	if(!in)
+	{
+		printf("failed to open input file with error: %s\n", strerror(errno));
+		return 1;
+	}
+	FILE *out = fopen(ofile, "w");
+	if(!out)
+	{
+		printf("failed to open input file with error: %s\n", strerror(errno));
+		return 1;
+	}
+	while(!feof(in))
+	{
+		char *buf, *outbuf, *op, *ip;
+
+        buf = (char*)malloc(4096);
+        if (!buf)
+        {
+            printf("failed to allocate memory for \"buf\"\n");
+            return 1;
+        }
+        outbuf = (char*)malloc(4096);
+        if (!outbuf)
+        {
+            printf("failed to allocate memory for \"outbuf\"");
+            free(buf);
+            return 1;
+        }
+		op = outbuf;
+		ip = buf;
+		if(!fgets(buf, 4096, in))
+        {
+            if (buf)
+                free(buf);
+            if (outbuf)
+                free(outbuf);
+			break;
+        }
+		size_t len = strlen(buf), outlen = 4096;
+		int enc_len = iconv(id, &ip, &len, &op, &outlen);
+		if(enc_len == -1)
+		{
+			printf("failed to convert buffer with error: %s\n", strerror(errno));
+            free(buf);
+            free(outbuf);
+			return 1;
+		}
+		enc_len = 4096 - outlen;
+		if((int)fwrite(outbuf, 1, enc_len, out) != enc_len)
+		{
+			printf("failed to write data to file with error: %s\n", strerror(errno));
+            free(buf);
+            free(outbuf);
+			return 1;
+		}
+		free(buf);
+		free(outbuf);
+	}
+	return 0;
+}
+
-- 
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