# HG changeset patch
# User pang@sojourner.intellisis
# Date 1269993664 25200
# Node ID 2b95aa9e4e46fe07715294971f4fb4dafcaadbff
# Parent  df03fa355b60ab3a64f28df546edccfbcdccf408
initial add rcg.c

diff -r df03fa355b60 -r 2b95aa9e4e46 rcg.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rcg.c	Tue Mar 30 17:01:04 2010 -0700
@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <regex.h>
+
+#define __USE_GNU
+#include <string.h>
+
+const size_t BUFSIZE = 5000;
+const size_t REMSIZE = 3;
+
+const char *CLR_START = "-CLR_START-";
+const char *CLR_END = "-CLR_END-";
+
+int main(int argc, char **argv)
+{
+	char *buf = calloc(BUFSIZE, sizeof(char));
+
+	regex_t *re = calloc(1, sizeof(regex_t));
+	regcomp(re, "(Hello)", REG_EXTENDED);
+
+	regmatch_t *rem = calloc(REMSIZE, sizeof(regmatch_t));
+
+	size_t CLR_START_len = strlen(CLR_START);
+	size_t CLR_END_len = strlen(CLR_END);
+
+	size_t out_len = strlen(buf);
+	if (out_len >= BUFSIZE)
+		out_len = BUFSIZE - 1;
+
+	char *out = calloc(out_len, sizeof(char));
+	unsigned int out_pos = 0;
+
+	while (fgets(buf, BUFSIZE, stdin))
+	{
+		regexec(re, buf, REMSIZE, rem, 0);
+
+		int i;
+
+		for (i = 0; i < REMSIZE; i++)
+			fprintf(stderr, "%d %d \n", rem[i].rm_so, rem[i].rm_eo);		//d// 20100327 PBA
+
+		for (i = 1; i < REMSIZE; i++)
+		{ 
+			int so = rem[i].rm_so;
+			int eo = rem[i].rm_eo;
+			int nso = BUFSIZE;
+
+			if ((i + 1) < REMSIZE)
+				nso = rem[i + 1].rm_so; 
+				if (nso == -1)
+					nso = BUFSIZE;
+
+			if (so >= 0 && eo >= 0)
+			{
+				int match_len = eo - so;
+				out_len += CLR_START_len + CLR_END_len;
+				out = (char *)realloc(out, out_len*sizeof(char));
+				if (i == 0)
+				{
+					strncpy(&out[out_pos], buf, so);
+					out_pos += so;
+				}
+				strncpy(&out[out_pos], CLR_START, CLR_START_len);
+				out_pos += CLR_START_len;
+				strncpy(&out[out_pos], &buf[so], match_len);
+				out_pos += match_len;
+				strncpy(&out[out_pos], CLR_END, CLR_END_len);
+				out_pos += CLR_END_len;
+				strncpy(&out[out_pos], &buf[eo], nso - eo);
+				out_pos += nso - eo;
+			}
+		}
+
+		fputs(out, stdout);
+	}
+
+	return 0;
+}