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-rw-r--r--polyp/ioline.c368
1 files changed, 0 insertions, 368 deletions
diff --git a/polyp/ioline.c b/polyp/ioline.c
deleted file mode 100644
index 5b669f5c..00000000
--- a/polyp/ioline.c
+++ /dev/null
@@ -1,368 +0,0 @@
-/* $Id$ */
-
-/***
- This file is part of polypaudio.
-
- polypaudio is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published
- by the Free Software Foundation; either version 2 of the License,
- or (at your option) any later version.
-
- polypaudio is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with polypaudio; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <errno.h>
-#include <stdio.h>
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "ioline.h"
-#include "xmalloc.h"
-#include "log.h"
-
-#define BUFFER_LIMIT (64*1024)
-#define READ_SIZE (1024)
-
-struct pa_ioline {
- pa_iochannel *io;
- pa_defer_event *defer_event;
- pa_mainloop_api *mainloop;
- int ref;
- int dead;
-
- char *wbuf;
- size_t wbuf_length, wbuf_index, wbuf_valid_length;
-
- char *rbuf;
- size_t rbuf_length, rbuf_index, rbuf_valid_length;
-
- void (*callback)(pa_ioline*io, const char *s, void *userdata);
- void *userdata;
-
- int defer_close;
-};
-
-static void io_callback(pa_iochannel*io, void *userdata);
-static void defer_callback(pa_mainloop_api*m, pa_defer_event*e, void *userdata);
-
-pa_ioline* pa_ioline_new(pa_iochannel *io) {
- pa_ioline *l;
- assert(io);
-
- l = pa_xmalloc(sizeof(pa_ioline));
- l->io = io;
- l->dead = 0;
-
- l->wbuf = NULL;
- l->wbuf_length = l->wbuf_index = l->wbuf_valid_length = 0;
-
- l->rbuf = NULL;
- l->rbuf_length = l->rbuf_index = l->rbuf_valid_length = 0;
-
- l->callback = NULL;
- l->userdata = NULL;
- l->ref = 1;
-
- l->mainloop = pa_iochannel_get_mainloop_api(io);
-
- l->defer_event = l->mainloop->defer_new(l->mainloop, defer_callback, l);
- l->mainloop->defer_enable(l->defer_event, 0);
-
- l->defer_close = 0;
-
- pa_iochannel_set_callback(io, io_callback, l);
-
- return l;
-}
-
-static void ioline_free(pa_ioline *l) {
- assert(l);
-
- if (l->io)
- pa_iochannel_free(l->io);
-
- if (l->defer_event)
- l->mainloop->defer_free(l->defer_event);
-
- pa_xfree(l->wbuf);
- pa_xfree(l->rbuf);
- pa_xfree(l);
-}
-
-void pa_ioline_unref(pa_ioline *l) {
- assert(l && l->ref >= 1);
-
- if ((--l->ref) <= 0)
- ioline_free(l);
-}
-
-pa_ioline* pa_ioline_ref(pa_ioline *l) {
- assert(l && l->ref >= 1);
-
- l->ref++;
- return l;
-}
-
-void pa_ioline_close(pa_ioline *l) {
- assert(l && l->ref >= 1);
-
- l->dead = 1;
- if (l->io) {
- pa_iochannel_free(l->io);
- l->io = NULL;
- }
-
- if (l->defer_event) {
- l->mainloop->defer_free(l->defer_event);
- l->defer_event = NULL;
- }
-}
-
-void pa_ioline_puts(pa_ioline *l, const char *c) {
- size_t len;
- assert(l && c && l->ref >= 1 && !l->dead);
-
- pa_ioline_ref(l);
-
- len = strlen(c);
- if (len > BUFFER_LIMIT - l->wbuf_valid_length)
- len = BUFFER_LIMIT - l->wbuf_valid_length;
-
- if (len) {
- assert(l->wbuf_length >= l->wbuf_valid_length);
-
- /* In case the allocated buffer is too small, enlarge it. */
- if (l->wbuf_valid_length + len > l->wbuf_length) {
- size_t n = l->wbuf_valid_length+len;
- char *new = pa_xmalloc(n);
- if (l->wbuf) {
- memcpy(new, l->wbuf+l->wbuf_index, l->wbuf_valid_length);
- pa_xfree(l->wbuf);
- }
- l->wbuf = new;
- l->wbuf_length = n;
- l->wbuf_index = 0;
- } else if (l->wbuf_index + l->wbuf_valid_length + len > l->wbuf_length) {
-
- /* In case the allocated buffer fits, but the current index is too far from the start, move it to the front. */
- memmove(l->wbuf, l->wbuf+l->wbuf_index, l->wbuf_valid_length);
- l->wbuf_index = 0;
- }
-
- assert(l->wbuf_index + l->wbuf_valid_length + len <= l->wbuf_length);
-
- /* Append the new string */
- memcpy(l->wbuf + l->wbuf_index + l->wbuf_valid_length, c, len);
- l->wbuf_valid_length += len;
-
- l->mainloop->defer_enable(l->defer_event, 1);
- }
-
- pa_ioline_unref(l);
-}
-
-void pa_ioline_set_callback(pa_ioline*l, void (*callback)(pa_ioline*io, const char *s, void *userdata), void *userdata) {
- assert(l && l->ref >= 1);
- l->callback = callback;
- l->userdata = userdata;
-}
-
-static void failure(pa_ioline *l) {
- assert(l && l->ref >= 1 && !l->dead);
-
- pa_ioline_close(l);
-
- if (l->callback) {
- l->callback(l, NULL, l->userdata);
- l->callback = NULL;
- }
-}
-
-static void scan_for_lines(pa_ioline *l, size_t skip) {
- assert(l && l->ref >= 1 && skip < l->rbuf_valid_length);
-
- while (!l->dead && l->rbuf_valid_length > skip) {
- char *e, *p;
- size_t m;
-
- if (!(e = memchr(l->rbuf + l->rbuf_index + skip, '\n', l->rbuf_valid_length - skip)))
- break;
-
- *e = 0;
-
- p = l->rbuf + l->rbuf_index;
- m = strlen(p);
-
- l->rbuf_index += m+1;
- l->rbuf_valid_length -= m+1;
-
- /* A shortcut for the next time */
- if (l->rbuf_valid_length == 0)
- l->rbuf_index = 0;
-
- if (l->callback)
- l->callback(l, p, l->userdata);
-
- skip = 0;
- }
-
- /* If the buffer became too large and still no newline was found, drop it. */
- if (l->rbuf_valid_length >= BUFFER_LIMIT)
- l->rbuf_index = l->rbuf_valid_length = 0;
-}
-
-static int do_write(pa_ioline *l);
-
-static int do_read(pa_ioline *l) {
- assert(l && l->ref >= 1);
-
- while (!l->dead && pa_iochannel_is_readable(l->io)) {
- ssize_t r;
- size_t len;
-
- len = l->rbuf_length - l->rbuf_index - l->rbuf_valid_length;
-
- /* Check if we have to enlarge the read buffer */
- if (len < READ_SIZE) {
- size_t n = l->rbuf_valid_length+READ_SIZE;
-
- if (n >= BUFFER_LIMIT)
- n = BUFFER_LIMIT;
-
- if (l->rbuf_length >= n) {
- /* The current buffer is large enough, let's just move the data to the front */
- if (l->rbuf_valid_length)
- memmove(l->rbuf, l->rbuf+l->rbuf_index, l->rbuf_valid_length);
- } else {
- /* Enlarge the buffer */
- char *new = pa_xmalloc(n);
- if (l->rbuf_valid_length)
- memcpy(new, l->rbuf+l->rbuf_index, l->rbuf_valid_length);
- pa_xfree(l->rbuf);
- l->rbuf = new;
- l->rbuf_length = n;
- }
-
- l->rbuf_index = 0;
- }
-
- len = l->rbuf_length - l->rbuf_index - l->rbuf_valid_length;
-
- assert(len >= READ_SIZE);
-
- /* Read some data */
- r = pa_iochannel_read(l->io, l->rbuf+l->rbuf_index+l->rbuf_valid_length, len);
- if (r == 0) {
- /* Got an EOF, so fake an exit command. */
- l->rbuf_index = 0;
- snprintf (l->rbuf, l->rbuf_length, "exit\n");
- r = 5;
- pa_ioline_puts(l, "\nExiting.\n");
- do_write(l);
- } else if (r < 0) {
- pa_log(__FILE__": read() failed: %s\n", strerror(errno));
- failure(l);
- return -1;
- }
-
- l->rbuf_valid_length += r;
-
- /* Look if a line has been terminated in the newly read data */
- scan_for_lines(l, l->rbuf_valid_length - r);
- }
-
- return 0;
-}
-
-/* Try to flush the buffer */
-static int do_write(pa_ioline *l) {
- ssize_t r;
- assert(l && l->ref >= 1);
-
- while (!l->dead && pa_iochannel_is_writable(l->io) && l->wbuf_valid_length) {
-
- if ((r = pa_iochannel_write(l->io, l->wbuf+l->wbuf_index, l->wbuf_valid_length)) < 0) {
- pa_log(__FILE__": write() failed: %s\n", r < 0 ? strerror(errno) : "EOF");
- failure(l);
- return -1;
- }
-
- l->wbuf_index += r;
- l->wbuf_valid_length -= r;
-
- /* A shortcut for the next time */
- if (l->wbuf_valid_length == 0)
- l->wbuf_index = 0;
- }
-
- return 0;
-}
-
-/* Try to flush read/write data */
-static void do_work(pa_ioline *l) {
- assert(l && l->ref >= 1);
-
- pa_ioline_ref(l);
-
- l->mainloop->defer_enable(l->defer_event, 0);
-
- if (!l->dead)
- do_write(l);
-
- if (!l->dead)
- do_read(l);
-
- if (l->defer_close && !l->wbuf_valid_length)
- failure(l);
-
- pa_ioline_unref(l);
-}
-
-static void io_callback(pa_iochannel*io, void *userdata) {
- pa_ioline *l = userdata;
- assert(io && l && l->ref >= 1);
-
- do_work(l);
-}
-
-static void defer_callback(pa_mainloop_api*m, pa_defer_event*e, void *userdata) {
- pa_ioline *l = userdata;
- assert(l && l->ref >= 1 && l->mainloop == m && l->defer_event == e);
-
- do_work(l);
-}
-
-void pa_ioline_defer_close(pa_ioline *l) {
- assert(l);
-
- l->defer_close = 1;
-
- if (!l->wbuf_valid_length)
- l->mainloop->defer_enable(l->defer_event, 1);
-}
-
-void pa_ioline_printf(pa_ioline *s, const char *format, ...) {
- char *t;
- va_list ap;
-
-
- va_start(ap, format);
- t = pa_vsprintf_malloc(format, ap);
- va_end(ap);
-
- pa_ioline_puts(s, t);
- pa_xfree(t);
-}
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