add first bits of the I/O wrapper.

Signed-off-by: Gediminas Jakutis <gediminas@varciai.lt>

1 files changed, 32 insertions, 2 deletions

diff --git a/src/main.c b/src/main.c
index ee80826..b70e599 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,8 +1,10 @@
+#include <unistd.h>
 #include <errno.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include "io.h"
 
 static struct settings_s {
 	size_t fetchpos;
@@ -12,6 +14,9 @@ static struct settings_s {
 	int mode;
 } settings = {0};
 
+static struct stream file_in = {.fd = -1};
+static struct stream file_out = {.fd = -1};
+
 static int parseargs(int argc, char **argv, struct settings_s * settings);
 void printhelp(const char * const name);
 
@@ -23,7 +28,25 @@ int main(int argc, char **argv)
 		goto out;
 	}
 
+	file_in.name = settings.filein;
+	file_in.stride = 0; /* TODO */
+
+	if ((ret = openstream(&file_in))) {
+		goto out;
+	}
+
+	file_out.name = settings.fileout ? settings.fileout : settings.filein;
+	file_out.out = 1;
+	file_out.n = file_in.n;
+	file_out.stride = 0; /* TODO */
+
+	if ((ret = openstream(&file_out))) {
+		goto out;
+	}
+
 out:
+	close(file_in.fd);
+	close(file_out.fd);
 	return ret;
 }
 
@@ -39,9 +62,9 @@ static int parseargs(int argc, char **argv, struct settings_s * settings)
 
 	for (i = 1; i < argc - 1; ++i) {
 		if (!(strcmp(argv[i], "--sort"))) {
-			s.mode = 0;
+			s.mode &= ~1;
 		} else if (!(strcmp(argv[i], "--fetch"))) {
-			s.mode = 1;
+			s.mode |= 1;
 		} else if (!(strncmp(argv[i], "--position=", 11))) {
 			if (strlen(argv[i]) > 11) {
 				s.fetchpos = strtoul(argv[i] + 11, NULL, 10);
@@ -71,7 +94,14 @@ static int parseargs(int argc, char **argv, struct settings_s * settings)
 		s.filein = argv[i];
 	}
 
+	if (!s.fileout) {
+		s.fileout = s.filein;
+	}
+
+	s.fetchto = s.fetchpos + s.fetchto;
+
 	*settings = s;
+
 	if (0) {
 err:
 		ret = EINVAL;