X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=visor;a=blobdiff_plain;f=visor%2Fsrc%2Fmain_unix.c;h=96d59cb7a09e85c596ccd4877208f71bdc404a10;hp=9db4e36315f408f5609529bbfa843609f485724a;hb=94c867869ece77f27cf3c8b637d44e13d86f5b88;hpb=24f7b6535c6c25040f4a2f2c655a913c177531eb

diff --git a/visor/src/main_unix.c b/visor/src/main_unix.c
index 9db4e36..96d59cb 100644
--- a/visor/src/main_unix.c
+++ b/visor/src/main_unix.c
@@ -1,13 +1,54 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
 #include "term.h"
+#include "visor.h"
+
+struct file {
+	int fd;
+	void *maddr;
+	size_t msize;
+};
 
 static int parse_args(int argc, char **argv);
 static int init(void);
 static void cleanup(void);
+/* file operations */
+static vi_file *file_open(const char *path, unsigned int flags);
+static void file_close(vi_file *file);
+static long file_size(vi_file *file);
+static void *file_map(vi_file *file);
+static void file_unmap(vi_file *file);
+static long file_read(vi_file *file, void *buf, long count);
+static long file_write(vi_file *file, void *buf, long count);
+static long file_seek(vi_file *file, long offs, int whence);
+
+static struct visor *vi;
 
 static int num_fpaths;
 static char **fpaths;
 
+static struct vi_alloc alloc = {
+	malloc, free, realloc
+};
+
+static struct vi_fileops fops = {
+	file_open, file_close, file_size,
+	file_map, file_unmap,
+	file_read, file_write, file_seek
+};
+
+/*
+static struct vi_ttyops ttyops = {
+	tty_clear, tty_clear_line, tty_clear_line_at,
+	tty_setcursor, tty_putchar, tty_putchar_at,
+	tty_scroll, tty_del_back, tty_del_fwd, tty_status
+};
+*/
+
 int main(int argc, char **argv)
 {
 	if(parse_args(argc, argv) == -1) {
@@ -58,13 +99,105 @@ static int init(void)
 	}
 	term_clear();
 
+	if(!(vi = vi_create(&alloc))) {
+		return -1;
+	}
+	vi_set_fileops(vi, &fops);
+
 	for(i=0; i<num_fpaths; i++) {
-		/* open fpaths[i] */
+		if(!vi_new_buf(vi, fpaths[i])) {
+			return -1;
+		}
+		printf("loaded file: %s\n", fpaths[i]);
 	}
 	return 0;
 }
 
 static void cleanup(void)
 {
+	if(vi) {
+		vi_destroy(vi);
+	}
 	term_cleanup();
 }
+
+static vi_file *file_open(const char *path, unsigned int flags)
+{
+	struct file *file;
+
+	if(!(file = calloc(1, sizeof *file))) {
+		return 0;
+	}
+	if((file->fd = open(path, flags)) == -1) {
+		free(file);
+		return 0;
+	}
+	return (vi_file*)file;
+}
+
+static void file_close(vi_file *vif)
+{
+	struct file *file = vif;
+	if(!file) return;
+
+	if(file->fd >= 0) {
+		if(file->maddr) {
+			file_unmap(file);
+		}
+		close(file->fd);
+	}
+	free(file);
+}
+
+static long file_size(vi_file *vif)
+{
+	struct file *file = vif;
+	struct stat st;
+
+	if(fstat(file->fd, &st) == -1) {
+		return -1;
+	}
+	return st.st_size;
+}
+
+static void *file_map(vi_file *vif)
+{
+	struct file *file = vif;
+	long sz;
+
+	if((sz = file_size(file)) == -1) {
+		return 0;
+	}
+	if((file->maddr = mmap(0, sz, PROT_READ, MAP_PRIVATE, file->fd, 0)) == (void*)-1) {
+		return 0;
+	}
+	file->msize = sz;
+	return file->maddr;
+}
+
+static void file_unmap(vi_file *vif)
+{
+	struct file *file = vif;
+	if(file->maddr) {
+		munmap(file->maddr, file->msize);
+	}
+	file->maddr = 0;
+}
+
+static long file_read(vi_file *vif, void *buf, long count)
+{
+	struct file *file = vif;
+	return read(file->fd, buf, count);
+}
+
+static long file_write(vi_file *vif, void *buf, long count)
+{
+	struct file *file = vif;
+	return write(file->fd, buf, count);
+}
+
+static long file_seek(vi_file *vif, long offs, int whence)
+{
+	struct file *file = vif;
+	return lseek(file->fd, offs, whence);
+}