/* Add the contents of FILENAME to the history list, a line at a time.
If FILENAME is NULL, then read from ~/.history. Returns 0 if
successful, or errno if not. */
int read_history (void)
{
return (read_history_range (NULL, 0, -1));
}
char *getline()
{
char *prompt;
int len;
char *home;
int fdh;
/* If initialization hasn't been done, do it now:
* - We don't want TAB completion
*/
if (!done_init) {
rl_bind_key('\t', rl_insert);
/* get history from file */
home = getenv("FVWM_USERDIR");
h_file = safemalloc(strlen(home) + sizeof(HISTFILE) + 1);
strcpy(h_file, home);
strcat(h_file, HISTFILE);
if( access( h_file, F_OK) < 0) {
/* if it doesn't exist create it */
fdh = creat( h_file, S_IRUSR | S_IWUSR );
if( fdh != -1 ) {
close( fdh );
}
} else {
read_history_range( h_file, 0, HISTSIZE );
}
done_init = 1;
}
/* Empty out the previous info */
len = 0;
*cmd = '\0';
prompt = PS1;
while (1) {
int linelen = 0;
/* If the buffer has already been allocated, free the memory. */
if (line != (char *)NULL)
free(line);
/* Get a line from the user. */
line = readline(prompt);
if (line == NULL)
return (NULL);
/* Make sure we have enough space for the new line */
linelen = strlen(line);
if (len + linelen > MAX_COMMAND_SIZE-2 ) {
fprintf( stderr, "line too long %d chars max %d \a\n",
len+linelen, MAX_COMMAND_SIZE-2 );
strncat(cmd, line, MAX_COMMAND_SIZE-len-2);
add_history(cmd);
break;
}
/* Copy the new line onto the end of the current line */
strcat(cmd, line);
/* If the current line doesn't end with a backslash, we're done */
len = strlen(cmd);
if (cmd[len-1] != '\\')
break;
/* Otherwise, remove it and wait for more (add a space if needed) */
prompt = PS2;
cmd[len-1] = (cmd[len-2]==' ' || cmd[len-2]=='\t') ? '\0' : ' ';
}
/* If the command has any text in it, save it on the history. */
if (*cmd != '\0') {
add_history(cmd);
append_history( 1,h_file );
history_truncate_file( h_file, HISTSIZE );
}
cmd[len] = '\n';
cmd[len+1] = '\0';
return (cmd);
}