From e68b45013fe01bd5e0c431b14c926ad203b598c9 Mon Sep 17 00:00:00 2001
From: Matteo Paonessa <matteo.paonessa@gmail.com>
Date: Mon, 11 Jan 2016 12:19:44 +0100
Subject: [PATCH] Initial windows support

---
 src/compresshelper.c |  7 ++++-
 src/wingetopt.c      | 69 ++++++++++++++++++++++++++++++++++++++++++++
 src/wingetopt.h      | 24 +++++++++++++++
 3 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 src/wingetopt.c
 create mode 100644 src/wingetopt.h

diff --git a/src/compresshelper.c b/src/compresshelper.c
index 1c6ff64..5fcdec5 100644
--- a/src/compresshelper.c
+++ b/src/compresshelper.c
@@ -5,9 +5,14 @@
 #include <string.h>
 #include <sys/types.h>
 #include <turbojpeg.h>
-#include <getopt.h>
 #include <ctype.h>
 
+#ifdef _WIN32
+#include "wingetopt.h"
+#else
+#include <getopt.h>
+#endif
+
 #include "utils.h"
 #include "jpeg.h"
 #include "png.h"
diff --git a/src/wingetopt.c b/src/wingetopt.c
new file mode 100644
index 0000000..b7a33c9
--- /dev/null
+++ b/src/wingetopt.c
@@ -0,0 +1,69 @@
+#ifndef __GNUC__
+
+#include "wingetopt.h"
+#include <stdio.h>
+
+#define NULL	0
+#define EOF	(-1)
+#define ERR(s, c)	if(opterr){\
+	char errbuf[2];\
+	errbuf[0] = c; errbuf[1] = '\n';\
+	fputs(argv[0], stderr);\
+	fputs(s, stderr);\
+	fputc(c, stderr);}
+	//(void) write(2, argv[0], (unsigned)strlen(argv[0]));\
+	//(void) write(2, s, (unsigned)strlen(s));\
+	//(void) write(2, errbuf, 2);}
+
+int	opterr = 1;
+int	optind = 1;
+int	optopt;
+char	*optarg;
+
+int
+getopt(argc, argv, opts)
+int	argc;
+char	**argv, *opts;
+{
+	static int sp = 1;
+	register int c;
+	register char *cp;
+
+	if(sp == 1)
+		if(optind >= argc ||
+		   argv[optind][0] != '-' || argv[optind][1] == '\0')
+			return(EOF);
+		else if(strcmp(argv[optind], "--") == NULL) {
+			optind++;
+			return(EOF);
+		}
+	optopt = c = argv[optind][sp];
+	if(c == ':' || (cp=strchr(opts, c)) == NULL) {
+		ERR(": illegal option -- ", c);
+		if(argv[optind][++sp] == '\0') {
+			optind++;
+			sp = 1;
+		}
+		return('?');
+	}
+	if(*++cp == ':') {
+		if(argv[optind][sp+1] != '\0')
+			optarg = &argv[optind++][sp+1];
+		else if(++optind >= argc) {
+			ERR(": option requires an argument -- ", c);
+			sp = 1;
+			return('?');
+		} else
+			optarg = argv[optind++];
+		sp = 1;
+	} else {
+		if(argv[optind][++sp] == '\0') {
+			sp = 1;
+			optind++;
+		}
+		optarg = NULL;
+	}
+	return(c);
+}
+
+#endif  /* __GNUC__ */
diff --git a/src/wingetopt.h b/src/wingetopt.h
new file mode 100644
index 0000000..8f9748c
--- /dev/null
+++ b/src/wingetopt.h
@@ -0,0 +1,24 @@
+#ifdef __GNUC__
+#include <getopt.h>
+#endif
+#ifndef __GNUC__
+
+#ifndef _WINGETOPT_H_
+#define _WINGETOPT_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int opterr;
+extern int optind;
+extern int optopt;
+extern char *optarg;
+extern int getopt(int argc, char **argv, char *opts);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* _GETOPT_H_ */
+#endif  /* __GNUC__ */