#include <stdio.h>
-#include <signal.h>
-#include <errno.h>
+#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
-#include <termios.h>
-#include <sys/ioctl.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 sighandler(int s);
+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
+};
-int term_width, term_height;
-int ttyfd;
-struct termios saved_term;
+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)
{
- int res;
- char c;
-
+ if(parse_args(argc, argv) == -1) {
+ return 1;
+ }
if(init() == -1) {
return 1;
}
+ vi_redraw(vi);
+
for(;;) {
- if((res = read(ttyfd, &c, 1)) == 0 || (res < 0 && errno != EINTR)) {
- break;
+ int c = term_getchar();
+
+ switch(c) {
+ case 27:
+ case 'q':
+ case -1:
+ goto end;
}
- /* proc input */
}
+end:
cleanup();
return 0;
}
+static int parse_args(int argc, char **argv)
+{
+ int i;
+
+ fpaths = argv + 1;
+ num_fpaths = 0;
+ for(i=1; i<argc; i++) {
+ if(argv[i][0] == '-') {
+ fprintf(stderr, "invalid option: %s\n", argv[i]);
+ return -1;
+ } else {
+ argv[++num_fpaths] = argv[i];
+ }
+ }
+ return 0;
+}
+
static int init(void)
{
- struct termios term;
- struct winsize winsz;
+ int i;
- if((ttyfd = open("/dev/tty", O_RDWR)) == -1) {
- perror("failed to open /dev/tty");
+ if(term_init(0) == -1) {
return -1;
}
- if(tcgetattr(ttyfd, &term) == -1) {
- perror("failed to get terminal attr");
+ term_clear();
+
+ if(!(vi = vi_create(&alloc))) {
return -1;
}
- saved_term = term;
- term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
- term.c_oflag &= ~OPOST;
- term.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
- term.c_cflag = (term.c_cflag & ~(CSIZE | PARENB)) | CS8;
-
- if(tcsetattr(ttyfd, TCSAFLUSH, &term) == -1) {
- perror("failed to change terminal attributes");
- return -1;
+ vi_set_fileops(vi, &fops);
+ vi_set_ttyops(vi, &ttyops);
+
+ for(i=0; i<num_fpaths; i++) {
+ if(!vi_new_buf(vi, fpaths[i])) {
+ return -1;
+ }
}
- ioctl(1, TIOCGWINSZ, &winsz);
- term_width = winsz.ws_col;
- term_height = winsz.ws_row;
+ term_resize_func(resized);
+ return 0;
+}
+
+static void cleanup(void)
+{
+ if(vi) {
+ vi_destroy(vi);
+ }
+ term_cleanup();
+}
- signal(SIGWINCH, sighandler);
+static void resized(int x, int y)
+{
+ vi_term_size(vi, x, y);
+}
- write(ttyfd, "\033[2J", 4);
+static vi_file *file_open(const char *path, unsigned int flags)
+{
+ struct file *file;
- return 0;
+ 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 cleanup(void)
+static void file_close(vi_file *vif)
{
- tcsetattr(ttyfd, TCSAFLUSH, &saved_term);
- close(ttyfd);
+ struct file *file = vif;
+ if(!file) return;
+
+ if(file->fd >= 0) {
+ if(file->maddr) {
+ file_unmap(file);
+ }
+ close(file->fd);
+ }
+ free(file);
}
-static void sighandler(int s)
+static long file_size(vi_file *vif)
{
- struct winsize winsz;
+ struct file *file = vif;
+ struct stat st;
- signal(s, sighandler);
+ if(fstat(file->fd, &st) == -1) {
+ return -1;
+ }
+ return st.st_size;
+}
- switch(s) {
- case SIGWINCH:
- ioctl(1, TIOCGWINSZ, &winsz);
- term_width = winsz.ws_col;
- term_height = winsz.ws_row;
- /* redraw */
- break;
+static void *file_map(vi_file *vif)
+{
+ struct file *file = vif;
+ long sz;
- default:
- break;
+ 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();
}
projects / visor / blobdiff