113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
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#include "FvwmConsole.h"
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#ifndef HAVE_READLINE
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static char cmd[MAX_COMMAND_SIZE];
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/* no readline - starts here */
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char *getline() {
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if( fgets(cmd,MAX_COMMAND_SIZE,stdin) == NULL ) {
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return(NULL);
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}
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return(cmd);
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}
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#else
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/* readline - starts here */
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#include <readline/readline.h>
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#include <readline/history.h>
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extern int rl_bind_key();
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static char cmd[MAX_COMMAND_SIZE];
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static char *line = (char *)NULL;
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static int done_init = 0;
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static char *h_file;
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char *getline()
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{
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char *prompt;
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int len;
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char *home;
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int fdh;
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/* If initialization hasn't been done, do it now:
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* - We don't want TAB completion
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*/
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if (!done_init) {
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rl_bind_key('\t', rl_insert);
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/* get history from file */
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home = getenv("HOME");
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h_file = safemalloc( strlen(home)+ 14);
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strcpy(h_file,home);
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strcat(h_file,HISTFILE);
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if( access( h_file, F_OK) < 0) {
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/* if it doesn't exist create it */
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fdh = creat( h_file, S_IRUSR | S_IWUSR );
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if( fdh != -1 ) {
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close( fdh );
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}
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} else {
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read_history_range( h_file, 0, HISTSIZE );
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}
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done_init = 1;
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}
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/* Empty out the previous info */
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len = 0;
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*cmd = '\0';
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prompt = PS1;
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while (1) {
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int linelen = 0;
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/* If the buffer has already been allocated, free the memory. */
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if (line != (char *)NULL)
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free(line);
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/* Get a line from the user. */
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line = readline(prompt);
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if (line == NULL)
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return (NULL);
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/* Make sure we have enough space for the new line */
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linelen = strlen(line);
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if (len + linelen > MAX_COMMAND_SIZE-2 ) {
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fprintf( stderr, "line too long %d chars max %d \a\n",
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len+linelen, MAX_COMMAND_SIZE-2 );
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strncat(cmd, line, MAX_COMMAND_SIZE-len-2);
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add_history(cmd);
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break;
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}
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/* Copy the new line onto the end of the current line */
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strcat(cmd, line);
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/* If the current line doesn't end with a backslash, we're done */
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len = strlen(cmd);
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if (cmd[len-1] != '\\')
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break;
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/* Otherwise, remove it and wait for more (add a space if needed) */
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prompt = PS2;
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cmd[len-1] = (cmd[len-2]==' ' || cmd[len-2]=='\t') ? '\0' : ' ';
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}
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/* If the command has any text in it, save it on the history. */
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if (*cmd != '\0') {
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add_history(cmd);
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append_history( 1,h_file );
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history_truncate_file( h_file, HISTSIZE );
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}
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cmd[len] = '\n';
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cmd[len+1] = '\0';
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return (cmd);
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}
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/* readline - end here */
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#endif
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