102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/*
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* utils.c: miscellaneous utilities
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*
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* Copyright (c) 2013 - 2015, Přemysl Eric Janouch <p@janouch.name>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include <glib.h>
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#include <gio/gio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <curses.h>
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#include <termios.h>
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#ifndef TIOCGWINSZ
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#include <sys/ioctl.h>
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#endif // ! TIOCGWINSZ
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#include "config.h"
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#include "utils.h"
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/// Read the whole stream into a byte array.
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gboolean
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stream_read_all (GByteArray *ba, GInputStream *is, GError **error)
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{
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guint8 buffer[1024 * 64];
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gsize bytes_read;
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while (g_input_stream_read_all (is, buffer, sizeof buffer,
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&bytes_read, NULL, error))
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{
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g_byte_array_append (ba, buffer, bytes_read);
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if (bytes_read < sizeof buffer)
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return TRUE;
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}
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return FALSE;
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}
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/// Read a null-terminated string from a data input stream.
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gchar *
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stream_read_string (GDataInputStream *dis, GError **error)
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{
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gsize length;
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gchar *s = g_data_input_stream_read_upto (dis, "", 1, &length, NULL, error);
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if (!s)
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return NULL;
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GError *err = NULL;
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g_data_input_stream_read_byte (dis, NULL, &err);
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if (err)
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{
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g_free (s);
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g_propagate_error (error, err);
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return NULL;
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}
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return s;
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}
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gboolean
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xstrtoul (unsigned long *out, const char *s, int base)
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{
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char *end;
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errno = 0;
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*out = strtoul (s, &end, base);
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return errno == 0 && !*end && end != s;
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}
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// Didn't want to have this ugly piece of code in the main source file;
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// the standard endwin/refresh sequence makes the terminal flicker.
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void
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update_curses_terminal_size (void)
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{
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#if defined (HAVE_RESIZETERM) && defined (TIOCGWINSZ)
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struct winsize size;
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if (!ioctl (STDOUT_FILENO, TIOCGWINSZ, (char *) &size))
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{
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char *row = getenv ("LINES");
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char *col = getenv ("COLUMNS");
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unsigned long tmp;
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resizeterm (
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(row && xstrtoul (&tmp, row, 10)) ? tmp : size.ws_row,
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(col && xstrtoul (&tmp, col, 10)) ? tmp : size.ws_col);
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}
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#else // HAVE_RESIZETERM && TIOCGWINSZ
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endwin ();
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refresh ();
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#endif // HAVE_RESIZETERM && TIOCGWINSZ
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}
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