diff options
Diffstat (limited to 'app/plug-in/gimpenvirontable.c')
| -rw-r--r-- | app/plug-in/gimpenvirontable.c | 518 |
1 files changed, 518 insertions, 0 deletions
diff --git a/app/plug-in/gimpenvirontable.c b/app/plug-in/gimpenvirontable.c new file mode 100644 index 0000000..82f2840 --- /dev/null +++ b/app/plug-in/gimpenvirontable.c @@ -0,0 +1,518 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpenvirontable.c + * (C) 2002 Manish Singh <yosh@gimp.org> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <string.h> + +#include <gio/gio.h> + +#include "libgimpbase/gimpbase.h" +#include "libgimpconfig/gimpconfig.h" + +#include "plug-in-types.h" + +#include "gimpenvirontable.h" + +#include "gimp-intl.h" + + +typedef struct _GimpEnvironValue GimpEnvironValue; + +struct _GimpEnvironValue +{ + gchar *value; + gchar *separator; +}; + + +static void gimp_environ_table_finalize (GObject *object); + +static void gimp_environ_table_load_env_file (GimpEnvironTable *environ_table, + GFile *file); +static gboolean gimp_environ_table_legal_name (gchar *name); + +static void gimp_environ_table_populate (GimpEnvironTable *environ_table); +static void gimp_environ_table_populate_one (const gchar *name, + GimpEnvironValue *val, + GPtrArray *env_array); +static gboolean gimp_environ_table_pass_through (GimpEnvironTable *environ_table, + const gchar *name); + +static void gimp_environ_table_clear_vars (GimpEnvironTable *environ_table); +static void gimp_environ_table_clear_internal (GimpEnvironTable *environ_table); +static void gimp_environ_table_clear_envp (GimpEnvironTable *environ_table); + +static void gimp_environ_table_free_value (GimpEnvironValue *val); + + +G_DEFINE_TYPE (GimpEnvironTable, gimp_environ_table, G_TYPE_OBJECT) + +#define parent_class gimp_environ_table_parent_class + + +static void +gimp_environ_table_class_init (GimpEnvironTableClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + + object_class->finalize = gimp_environ_table_finalize; +} + +static void +gimp_environ_table_init (GimpEnvironTable *environ_table) +{ +} + +static void +gimp_environ_table_finalize (GObject *object) +{ + GimpEnvironTable *environ_table = GIMP_ENVIRON_TABLE (object); + + gimp_environ_table_clear_all (environ_table); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +GimpEnvironTable * +gimp_environ_table_new (gboolean verbose) +{ + GimpEnvironTable *table = g_object_new (GIMP_TYPE_ENVIRON_TABLE, NULL); + + table->verbose = verbose; + + return table; +} + +static guint +gimp_environ_table_str_hash (gconstpointer v) +{ +#ifdef G_OS_WIN32 + gchar *p = g_ascii_strup ((const gchar *) v, -1); + guint retval = g_str_hash (p); + + g_free (p); + + return retval; +#else + return g_str_hash (v); +#endif +} + +static gboolean +gimp_environ_table_str_equal (gconstpointer v1, + gconstpointer v2) +{ +#ifdef G_OS_WIN32 + gchar *string1 = g_ascii_strup ((const gchar *) v1, -1); + gchar *string2 = g_ascii_strup ((const gchar *) v2, -1); + gboolean retval = g_str_equal (string1, string2); + + g_free (string1); + g_free (string2); + + return retval; +#else + return g_str_equal (v1, v2); +#endif +} + +void +gimp_environ_table_load (GimpEnvironTable *environ_table, + GList *path) +{ + GList *list; + + g_return_if_fail (GIMP_IS_ENVIRON_TABLE (environ_table)); + + gimp_environ_table_clear (environ_table); + + environ_table->vars = + g_hash_table_new_full (gimp_environ_table_str_hash, + gimp_environ_table_str_equal, + g_free, + (GDestroyNotify) gimp_environ_table_free_value); + + for (list = path; list; list = g_list_next (list)) + { + GFile *dir = list->data; + GFileEnumerator *enumerator; + + enumerator = + g_file_enumerate_children (dir, + G_FILE_ATTRIBUTE_STANDARD_NAME "," + G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN "," + G_FILE_ATTRIBUTE_STANDARD_TYPE, + G_FILE_QUERY_INFO_NONE, + NULL, NULL); + + if (enumerator) + { + GFileInfo *info; + + while ((info = g_file_enumerator_next_file (enumerator, + NULL, NULL))) + { + if (! g_file_info_get_is_hidden (info) && + g_file_info_get_file_type (info) == G_FILE_TYPE_REGULAR) + { + GFile *file = g_file_enumerator_get_child (enumerator, info); + + gimp_environ_table_load_env_file (environ_table, file); + + g_object_unref (file); + } + + g_object_unref (info); + } + + g_object_unref (enumerator); + } + } +} + +void +gimp_environ_table_add (GimpEnvironTable *environ_table, + const gchar *name, + const gchar *value, + const gchar *separator) +{ + GimpEnvironValue *val; + + g_return_if_fail (GIMP_IS_ENVIRON_TABLE (environ_table)); + + gimp_environ_table_clear_envp (environ_table); + + if (! environ_table->internal) + environ_table->internal = + g_hash_table_new_full (g_str_hash, g_str_equal, + g_free, + (GDestroyNotify) gimp_environ_table_free_value); + + val = g_slice_new (GimpEnvironValue); + + val->value = g_strdup (value); + val->separator = g_strdup (separator); + + g_hash_table_insert (environ_table->internal, g_strdup (name), val); +} + +void +gimp_environ_table_remove (GimpEnvironTable *environ_table, + const gchar *name) +{ + g_return_if_fail (GIMP_IS_ENVIRON_TABLE (environ_table)); + + if (! environ_table->internal) + return; + + gimp_environ_table_clear_envp (environ_table); + + g_hash_table_remove (environ_table->internal, name); + + if (g_hash_table_size (environ_table->internal) == 0) + gimp_environ_table_clear_internal (environ_table); +} + +void +gimp_environ_table_clear (GimpEnvironTable *environ_table) +{ + g_return_if_fail (GIMP_IS_ENVIRON_TABLE (environ_table)); + + gimp_environ_table_clear_envp (environ_table); + + gimp_environ_table_clear_vars (environ_table); +} + +void +gimp_environ_table_clear_all (GimpEnvironTable *environ_table) +{ + g_return_if_fail (GIMP_IS_ENVIRON_TABLE (environ_table)); + + gimp_environ_table_clear_envp (environ_table); + + gimp_environ_table_clear_vars (environ_table); + gimp_environ_table_clear_internal (environ_table); +} + +gchar ** +gimp_environ_table_get_envp (GimpEnvironTable *environ_table) +{ + g_return_val_if_fail (GIMP_IS_ENVIRON_TABLE (environ_table), NULL); + + /* Hmm.. should we return a copy here in the future? Not thread safe atm, + * but the rest of it isn't either. + */ + + if (! environ_table->envp) + gimp_environ_table_populate (environ_table); + + return environ_table->envp; +} + + +/* private */ + +static void +gimp_environ_table_load_env_file (GimpEnvironTable *environ_table, + GFile *file) +{ + GInputStream *input; + GDataInputStream *data_input; + gchar *buffer; + gsize buffer_len; + GError *error = NULL; + + if (environ_table->verbose) + g_print ("Parsing '%s'\n", gimp_file_get_utf8_name (file)); + + input = G_INPUT_STREAM (g_file_read (file, NULL, &error)); + if (! input) + { + g_message (_("Could not open '%s' for reading: %s"), + gimp_file_get_utf8_name (file), + error->message); + g_clear_error (&error); + return; + } + + data_input = g_data_input_stream_new (input); + g_object_unref (input); + + while ((buffer = g_data_input_stream_read_line (data_input, &buffer_len, + NULL, &error))) + { + gchar *name; + gchar *value; + gchar *separator; + gchar *p; + gchar *q; + + /* Skip comments */ + if (buffer[0] == '#') + { + g_free (buffer); + continue; + } + + p = strchr (buffer, '='); + if (! p) + { + g_free (buffer); + continue; + } + + *p = '\0'; + + name = buffer; + value = p + 1; + + if (name[0] == '\0') + { + g_message (_("Empty variable name in environment file %s"), + gimp_file_get_utf8_name (file)); + g_free (buffer); + continue; + } + + separator = NULL; + + q = strchr (name, ' '); + if (q) + { + *q = '\0'; + + separator = name; + name = q + 1; + } + + if (! gimp_environ_table_legal_name (name)) + { + g_message (_("Illegal variable name in environment file %s: %s"), + gimp_file_get_utf8_name (file), name); + g_free (buffer); + continue; + } + + if (! g_hash_table_lookup (environ_table->vars, name)) + { + GimpEnvironValue *val = g_slice_new (GimpEnvironValue); + + val->value = gimp_config_path_expand (value, FALSE, NULL); + val->separator = g_strdup (separator); + + g_hash_table_insert (environ_table->vars, g_strdup (name), val); + } + + g_free (buffer); + } + + if (error) + { + g_message (_("Error reading '%s': %s"), + gimp_file_get_utf8_name (file), + error->message); + g_clear_error (&error); + } + + g_object_unref (data_input); +} + +static gboolean +gimp_environ_table_legal_name (gchar *name) +{ + gchar *s; + + if (! g_ascii_isalpha (*name) && (*name != '_')) + return FALSE; + + for (s = name + 1; *s; s++) + if (! g_ascii_isalnum (*s) && (*s != '_')) + return FALSE; + + return TRUE; +} + +static void +gimp_environ_table_populate (GimpEnvironTable *environ_table) +{ + gchar **env = g_listenv (); + gchar **var; + GPtrArray *env_array; + + var = env; + env_array = g_ptr_array_new (); + + while (*var) + { + /* g_listenv() only returns the names of environment variables + * that are correctly specified (name=value) in the environ + * array (Unix) or the process environment string table (Win32). + */ + + if (gimp_environ_table_pass_through (environ_table, *var)) + g_ptr_array_add (env_array, g_strconcat (*var, "=", g_getenv (*var), NULL)); + + var++; + } + + g_strfreev (env); + + if (environ_table->vars) + g_hash_table_foreach (environ_table->vars, + (GHFunc) gimp_environ_table_populate_one, + env_array); + + if (environ_table->internal) + g_hash_table_foreach (environ_table->internal, + (GHFunc) gimp_environ_table_populate_one, + env_array); + + g_ptr_array_add (env_array, NULL); + + environ_table->envp = (gchar **) g_ptr_array_free (env_array, FALSE); + +#ifdef ENVP_DEBUG + var = environ_table->envp; + + g_print ("GimpEnvironTable:\n"); + while (*var) + { + g_print ("%s\n", *var); + var++; + } +#endif /* ENVP_DEBUG */ +} + +static void +gimp_environ_table_populate_one (const gchar *name, + GimpEnvironValue *val, + GPtrArray *env_array) +{ + const gchar *old; + gchar *var = NULL; + + if (val->separator) + { + old = g_getenv (name); + + if (old) + var = g_strconcat (name, "=", val->value, val->separator, old, NULL); + } + + if (! var) + var = g_strconcat (name, "=", val->value, NULL); + + g_ptr_array_add (env_array, var); +} + +static gboolean +gimp_environ_table_pass_through (GimpEnvironTable *environ_table, + const gchar *name) +{ + gboolean vars, internal; + + vars = environ_table->vars && + g_hash_table_lookup (environ_table->vars, name); + + internal = environ_table->internal && + g_hash_table_lookup (environ_table->internal, name); + + return (!vars && !internal); +} + +static void +gimp_environ_table_clear_vars (GimpEnvironTable *environ_table) +{ + if (environ_table->vars) + { + g_hash_table_destroy (environ_table->vars); + environ_table->vars = NULL; + } +} + +static void +gimp_environ_table_clear_internal (GimpEnvironTable *environ_table) +{ + if (environ_table->internal) + { + g_hash_table_destroy (environ_table->internal); + environ_table->internal = NULL; + } +} + +static void +gimp_environ_table_clear_envp (GimpEnvironTable *environ_table) +{ + if (environ_table->envp) + { + g_strfreev (environ_table->envp); + environ_table->envp = NULL; + } +} + +static void +gimp_environ_table_free_value (GimpEnvironValue *val) +{ + g_free (val->value); + g_free (val->separator); + + g_slice_free (GimpEnvironValue, val); +} |