foo

[visor] / visor / src / main_unix.c

diff --git a/visor/src/main_unix.c b/visor/src/main_unix.c
index 9db4e36..9a9e91f 100644 (file)
--- a/visor/src/main_unix.c
+++ b/visor/src/main_unix.c
@@ -1,13 +1,66 @@
 #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);
+static void resized(int x, int y);
+/* 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);
+/* tty operations */
+static void tty_clear(void *cls);
+static void tty_clear_line(void *cls);
+static void tty_clear_line_at(int y, void *cls);
+static void tty_setcursor(int x, int y, void *cls);
+static void tty_putchar(char c, void *cls);
+static void tty_putchar_at(int x, int y, char c, void *cls);
+static void tty_scroll(int nlines, void *cls);
+static void tty_del_back(void *cls);
+static void tty_del_fwd(void *cls);
+static void tty_status(char *s, void *cls);
+static void tty_flush(void *cls);
+
+
+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, tty_flush
+};
+
 int main(int argc, char **argv)
 {
        if(parse_args(argc, argv) == -1) {
@@ -17,12 +70,15 @@ int main(int argc, char **argv)
                return 1;
        }
 
+       vi_redraw(vi);
+
        for(;;) {
                int c = term_getchar();
 
                switch(c) {
                case 27:
                case 'q':
+               case -1:
                        goto end;
                }
        }
@@ -58,13 +114,171 @@ static int init(void)
        }
        term_clear();
 
+       if(!(vi = vi_create(&alloc))) {
+               return -1;
+       }
+       vi_set_fileops(vi, &fops);
+       vi_set_ttyops(vi, &ttyops);
+
        for(i=0; i<num_fpaths; i++) {
-               /* open fpaths[i] */
+               if(!vi_new_buf(vi, fpaths[i])) {
+                       return -1;
+               }
        }
+
+       term_resize_func(resized);
        return 0;
 }
 
 static void cleanup(void)
 {
+       if(vi) {
+               vi_destroy(vi);
+       }
        term_cleanup();
 }
+
+static void resized(int x, int y)
+{
+       vi_term_size(vi, x, y);
+}
+
+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);
+}
+
+/* tty operations */
+
+static void tty_clear(void *cls)
+{
+       term_clear();
+}
+
+static void tty_clear_line(void *cls)
+{
+       /* TODO */
+}
+
+static void tty_clear_line_at(int y, void *cls)
+{
+       term_setcursor(y, 0);
+       /* TODO */
+}
+
+static void tty_setcursor(int x, int y, void *cls)
+{
+       term_setcursor(y, x);
+}
+
+static void tty_putchar(char c, void *cls)
+{
+       term_putchar(c);
+}
+
+static void tty_putchar_at(int x, int y, char c, void *cls)
+{
+       term_setcursor(y, x);
+       term_putchar(c);
+}
+
+static void tty_scroll(int nlines, void *cls)
+{
+       /* TODO */
+}
+
+static void tty_del_back(void *cls)
+{
+       /* TODO */
+}
+
+static void tty_del_fwd(void *cls)
+{
+       /* TODO */
+}
+
+static void tty_status(char *s, void *cls)
+{
+       /* TODO */
+}
+
+static void tty_flush(void *cls)
+{
+       term_flush();
+}