foo

[visor] / visor / src / main_unix.c

diff --git a/visor/src/main_unix.c b/visor/src/main_unix.c
index 6430272..96d59cb 100644 (file)
--- a/visor/src/main_unix.c
+++ b/visor/src/main_unix.c
@@ -1,10 +1,14 @@
 #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 {
-       FILE *fp;
+       int fd;
        void *maddr;
        size_t msize;
 };
@@ -101,7 +105,10 @@ static int init(void)
        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;
 }
@@ -117,65 +124,80 @@ static void cleanup(void)
 static vi_file *file_open(const char *path, unsigned int flags)
 {
        struct file *file;
-       const char *attr;
-
-       switch(flags & 0xff) {
-       case VI_RDONLY:
-               attr = "rb";
-               break;
-
-       case VI_WRONLY:
-               attr = (flags & VI_CREAT) ? "w+b" : "wb";
-               break;
-
-       case VI_RDWR:
-               attr = (flags & VI_CREAT) ? "w+b" : "r+b";
-               break;
-
-       default:
-               return 0;
-       }
-
 
        if(!(file = calloc(1, sizeof *file))) {
                return 0;
        }
-       if(!(file->fp = fopen(path, attr))) {
+       if((file->fd = open(path, flags)) == -1) {
                free(file);
                return 0;
        }
-       return file;
+       return (vi_file*)file;
 }
 
-static void file_close(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 *file)
+static long file_size(vi_file *vif)
 {
-       return -1;
+       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 *file)
+static void *file_map(vi_file *vif)
 {
-       return 0;
+       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 *file)
+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 *file, void *buf, long count)
+static long file_read(vi_file *vif, void *buf, long count)
 {
-       return -1;
+       struct file *file = vif;
+       return read(file->fd, buf, count);
 }
 
-static long file_write(vi_file *file, void *buf, long count)
+static long file_write(vi_file *vif, void *buf, long count)
 {
-       return -1;
+       struct file *file = vif;
+       return write(file->fd, buf, count);
 }
 
-static long file_seek(vi_file *file, long offs, int whence)
+static long file_seek(vi_file *vif, long offs, int whence)
 {
-       return -1;
+       struct file *file = vif;
+       return lseek(file->fd, offs, whence);
 }