add slackline stub - lchat - A line oriented chat front end for ii.
  HTML git clone git://git.suckless.org/lchat
   DIR Log
   DIR Files
   DIR Refs
   DIR README
       ---
   DIR commit 197736f5ab3283803a6ff9925ec9418decb746a1
   DIR parent 55128841b0b84282c27239d9b0ec920f0546a2d5
  HTML Author: Jan Klemkow <j.klemkow@wemelug.de>
       Date:   Fri, 23 Oct 2015 23:09:48 +0200
       
       add slackline stub
       
       Diffstat:
         A slackline.c                         |      60 +++++++++++++++++++++++++++++++
         A slackline.h                         |      23 +++++++++++++++++++++++
       
       2 files changed, 83 insertions(+), 0 deletions(-)
       ---
   DIR diff --git a/slackline.c b/slackline.c
       @@ -0,0 +1,60 @@
       +#include <stdio.h>
       +#include <stdlib.h>
       +#include <string.h>
       +
       +#include "slackline.h"
       +
       +struct slackline *
       +sl_init(void)
       +{
       +        struct slackline *sl = malloc(sizeof *sl);
       +
       +        if (sl == NULL)
       +                return NULL;
       +
       +        sl->bufsize = BUFSIZ;
       +        sl->buf = malloc(sl->bufsize);
       +        sl->buf[0] = '\0';
       +        sl->len = 0;
       +        sl->cur = 0;
       +
       +        return sl;
       +}
       +
       +void
       +sl_free(struct slackline *sl)
       +{
       +        free(sl->buf);
       +        free(sl);
       +}
       +
       +int
       +sl_keystroke(struct slackline *sl, int key)
       +{
       +        if (sl == NULL || sl->len < sl->cur)
       +                return -1;
       +
       +        /* add character to buffer */
       +        if (key >= 32 && key <= 127) {
       +                if (sl->cur < sl->len) {
       +                        memmove(sl->buf + sl->cur + 1, sl->buf + sl->cur,
       +                            sl->len - sl->cur);
       +                        sl->buf[sl->cur++] = key;
       +                } else {
       +                        sl->buf[sl->cur++] = key;
       +                        sl->buf[sl->cur] = '\0';
       +                }
       +
       +                return 0;
       +        }
       +
       +        /* handle ctl keys */
       +        switch (key) {
       +        case 8:        /* backspace */
       +                sl->cur--;
       +                sl->buf[sl->cur] = '\0';
       +                break;
       +        }
       +
       +        return 0;
       +}
   DIR diff --git a/slackline.h b/slackline.h
       @@ -0,0 +1,23 @@
       +#ifndef SLACKLIINE_H
       +#define SLACKLIINE_H
       +
       +/*
       + * +-+-+-+-+-+
       + * |c|c|c|0|0|
       + * +-+-+-+-+-+
       + *      ^   ^
       + *     len  bufsize
       + */
       +
       +struct slackline {
       +        char *buf;
       +        size_t bufsize;
       +        size_t len;
       +        size_t cur;
       +};
       +
       +struct slackline * sl_init(void);
       +void sl_free(struct slackline *);
       +int sl_keystroke(struct slackline *sl, int key);
       +
       +#endif