/* Load the editor program into Lua. Returns 0 on success, 1 on error. */
int loadProgram(void) {
int buflen;
char *buf = editorRowsToString(&buflen);
if (luaL_loadbuffer(l81.L,buf,buflen,l81.filename)) {
programError(lua_tostring(l81.L, -1));
free(buf);
return 1;
}
free(buf);
if (lua_pcall(l81.L,0,0,0)) {
programError(lua_tostring(l81.L, -1));
return 1;
}
l81.luaerr = 0;
editorClearError();
return 0;
}
/* Save the current file on disk. Return 0 on success, 1 on error. */
int editorSave(void) {
int len;
char *buf = editorRowsToString(&len);
int fd = open(E.filename,O_WRONLY|O_TRUNC,0644);
if (fd == -1) goto writeerr;
if (write(fd,buf,len) != len) goto writeerr;
close(fd);
free(buf);
E.dirty = 0;
editorSetStatusMessage("%d bytes written on disk", len);
return 0;
writeerr:
free(buf);
if (fd != -1) close(fd);
editorSetStatusMessage("Can't save! I/O error: %s",strerror(errno));
return 1;
}
/* Save the current file on disk. Return 0 on success, 1 on error. */
int editorSave(void) {
int len;
char *buf = editorRowsToString(&len);
int fd = open(E.filename,O_RDWR|O_CREAT,0644);
if (fd == -1) goto writeerr;
/* Use truncate + a single write(2) call in order to make saving
* a bit safer, under the limits of what we can do in a small editor. */
if (ftruncate(fd,len) == -1) goto writeerr;
if (write(fd,buf,len) != len) goto writeerr;
close(fd);
free(buf);
E.dirty = 0;
editorSetStatusMessage("%d bytes written on disk", len);
return 0;
writeerr:
free(buf);
if (fd != -1) close(fd);
editorSetStatusMessage("Can't save! I/O error: %s",strerror(errno));
return 1;
}