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/* prefops.c
* Functions for initializing preferences
*
* for Denemo, a gtk+ frontend to GNU Lilypond
* (c) 1999, 2000, 2001 Matthew Hiller
*/
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include "config.h"
#include "datastructures.h"
enum scannertoks
{
IMMEDIATEPLAYBACK = G_TOKEN_LAST,
LILYPATH,
MIDIPLAYER,
PLAYBACKOUTPUT
};
/* This checks to see if there's a .denemo/ directory in the user's
* home directory, tries to create one if there isn't, and returns the
* path to it
*
* .denemo/ is used for holding configuration files, templates, and so on.
*
* I suspect that this may have some Windows portability issues,
* but I'm not sure on this. */
gchar *
locatedotdenemo ()
{
static GString *dotdenemo = NULL;
DIR *dir;
if (!dotdenemo)
{
dotdenemo = g_string_new (getenv ("HOME"));
g_string_append (dotdenemo, "/.denemo");
}
if (dir = opendir (dotdenemo->str))
closedir (dir);
else
{
if (errno == ENOTDIR || errno == ENOENT)
{
if (errno == ENOTDIR)
if (unlink (dotdenemo->str) == -1)
g_warning (_("locatedotdenemo : error unlinking %s : %s"),
dotdenemo->str, g_strerror (errno));
#ifdef G_OS_WIN32
if (mkdir (dotdenemo->str) == -1)
#else
if (mkdir (dotdenemo->str, 0770) == -1)
#endif
g_warning (_("locatedotdenemo : error making directory %s : %s"),
dotdenemo->str, g_strerror (errno));
}
else
g_warning (_("locatedotdenemo : error opening directory %s : %s"),
dotdenemo->str, g_strerror (errno));
}
return dotdenemo->str;
}
static GScannerConfig scanner_config_template = {
(" \t\r\n") /* cset_skip_characters */ ,
(G_CSET_a_2_z "_/" G_CSET_A_2_Z) /* cset_identifier_first */ ,
(G_CSET_a_2_z
"_0123456789/"
G_CSET_A_2_Z G_CSET_LATINS G_CSET_LATINC) /* cset_identifier_nth */ ,
("#\n") /* cpair_comment_single */ ,
FALSE /* case_sensitive */ ,
TRUE /* skip_comment_multi */ ,
TRUE /* skip_comment_single */ ,
TRUE /* scan_comment_multi */ ,
TRUE /* scan_identifier */ ,
FALSE /* scan_identifier_1char */ ,
FALSE /* scan_identifier_NULL */ ,
TRUE /* scan_symbols */ ,
FALSE /* scan_binary */ ,
TRUE /* scan_octal */ ,
TRUE /* scan_float */ ,
TRUE /* scan_hex */ ,
FALSE /* scan_hex_dollar */ ,
TRUE /* scan_string_sq */ ,
TRUE /* scan_string_dq */ ,
TRUE /* numbers_2_int */ ,
FALSE /* int_2_float */ ,
FALSE /* identifier_2_string */ ,
TRUE /* char_2_token */ ,
TRUE /* symbol_2_token */ ,
FALSE /* scope_0_fallback */ ,
};
/* Actually read through a file looking for configuration settings
* and save them to prefs */
void
readpreffile (gchar * filename, struct prefinfo *prefs)
{
gint fd;
gint result;
GScanner *scanner;
if ((fd = open (filename, O_RDONLY)) == -1)
g_warning (_("readpreffile : error opening %s : %s"), filename,
g_strerror (errno));
else
{
scanner = g_scanner_new (&scanner_config_template);
g_scanner_freeze_symbol_table (scanner);
g_scanner_add_symbol (scanner, "immediateplayback",
GINT_TO_POINTER (IMMEDIATEPLAYBACK));
g_scanner_add_symbol (scanner, "lilypath", GINT_TO_POINTER (LILYPATH));
g_scanner_add_symbol (scanner, "midiplayer",
GINT_TO_POINTER (MIDIPLAYER));
g_scanner_add_symbol (scanner, "playbackoutput",
GINT_TO_POINTER (PLAYBACKOUTPUT));
g_scanner_thaw_symbol_table (scanner);
g_scanner_input_file (scanner, fd);
while ((result = g_scanner_get_next_token (scanner)) != G_TOKEN_EOF)
{
switch (result)
{
case IMMEDIATEPLAYBACK:
if (g_scanner_get_next_token (scanner) == G_TOKEN_EQUAL_SIGN
&& g_scanner_get_next_token (scanner) == G_TOKEN_IDENTIFIER)
{
prefs->immediateplayback =
(g_strcasecmp (scanner->value.v_identifier, "true") == 0);
}
case LILYPATH:
if (g_scanner_get_next_token (scanner) == G_TOKEN_EQUAL_SIGN
&& g_scanner_get_next_token (scanner) == G_TOKEN_IDENTIFIER)
{
g_string_assign (prefs->lilypath,
scanner->value.v_identifier);
}
break;
case MIDIPLAYER:
if (g_scanner_get_next_token (scanner) == G_TOKEN_EQUAL_SIGN
&& g_scanner_get_next_token (scanner) == G_TOKEN_IDENTIFIER)
{
g_string_assign (prefs->midiplayer,
scanner->value.v_identifier);
}
break;
case PLAYBACKOUTPUT:
if (g_scanner_get_next_token (scanner) == G_TOKEN_EQUAL_SIGN
&& g_scanner_get_next_token (scanner) == G_TOKEN_IDENTIFIER)
{
prefs->playbackoutput =
(g_strcasecmp (scanner->value.v_identifier, "true") == 0);
}
break;
}
}
close (fd);
g_scanner_destroy (scanner);
}
}
struct prefinfo *
initprefs ()
{
gchar *systemwide = PKGDATADIR "denemo.conf";
struct prefinfo *ret = g_malloc (sizeof (struct prefinfo));
gchar *localrc = g_strconcat (locatedotdenemo (), "/denemorc", NULL);
/* Reasonable default values */
ret->lilypath = g_string_new ("lilypond");
ret->midiplayer = g_string_new ("playmidi");
ret->immediateplayback = TRUE;
ret->playbackoutput = FALSE;
ret->lilyentrystyle = FALSE;
ret->createclones = FALSE;
/* Read values from systemwide preferences file */
readpreffile (systemwide, ret);
/* Read values from personal preferences file */
readpreffile (localrc, ret);
g_free (localrc);
return ret;
}
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