From c0fbae7a40c662ae77f59f5f919cd6b88e38a85d Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 2 May 2015 10:05:51 -0400
Subject: initial commit.

---
 src/main/perk.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 src/main/perk.c

(limited to 'src/main/perk.c')

diff --git a/src/main/perk.c b/src/main/perk.c
new file mode 100644
index 0000000..5fe8f17
--- /dev/null
+++ b/src/main/perk.c
@@ -0,0 +1,116 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <malloc.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <perk/perk.h>
+#include "perk_impl.h"
+
+static int perk_parse_opts(struct perk_ctx * ctx)
+{
+	int		i;
+	char *		ch;
+	const char **	popt;
+
+	for (i=1; i<ctx->argc; i++) {
+		ch = ctx->argv[i];
+
+		if (*ch == '-') {
+			switch (*++ch) {
+				case 'i':
+					popt = &ctx->fname;
+					break;
+				case 'h':
+					ctx->flags = PERK_HELP;
+					return 0;
+				default:
+					ctx->status = PERK_BAD_OPT;
+					return ctx->status;
+			}
+
+			while ((*++ch == '\t') || (*ch == ' '));
+
+			if (!*ch) {
+				if (++i < ctx->argc)
+					*popt = ctx->argv[i];
+				else
+					ctx->status = PERK_BAD_OPT_VAL;
+			} else
+				*popt = ch;
+		} else if (!ctx->fname)
+			ctx->fname = ch;
+		else
+			ctx->status = PERK_BAD_OPT;
+
+	}
+
+	return ctx->status;
+}
+
+
+static int perk_map_input(struct perk_ctx * ctx)
+{
+	ctx->fd = open(ctx->fname,O_RDONLY | O_CLOEXEC);
+
+	if (ctx->fd < 0) {
+		ctx->status = PERK_IO_ERROR;
+		return ctx->status;
+	}
+
+	ctx->status = pe_map_raw_image(ctx->fd,0,&ctx->map);
+
+	return ctx->status;
+}
+
+
+static int perk_exit(struct perk_ctx * ctx)
+{
+	if (ctx->map.addr)
+		pe_unmap_raw_image(&ctx->map);
+
+	return ctx->status;
+}
+
+
+static int perk_run(struct perk_ctx * ctx)
+{
+	struct pe_image_meta * meta;
+
+	if (perk_map_input(ctx))
+		return perk_exit(ctx);
+
+	if ((ctx->status = pe_get_image_meta(&ctx->map,&meta)))
+		return perk_exit(ctx);
+
+	/* pre-alpha default output */
+	pe_output_export_symbols(
+		meta,
+		PERK_OUTPUT_FORMAT_LIST | PERK_OUTPUT_FIELD_NAME,
+		stdout);
+
+	ctx->status = pe_free_image_meta(meta);
+
+	return perk_exit(ctx);
+}
+
+static int perk_main(int argc, char * argv[], char * envp[])
+{
+	struct perk_ctx ctx = {argc,argv,envp};
+
+	if (perk_parse_opts(&ctx))
+		return ctx.status;
+	else
+		return perk_run(&ctx);
+}
+
+#ifdef PERK_APP
+extern __typeof(perk_main) main __attribute__((alias("perk_main")));
+#endif
-- 
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