-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#ifndef fooconfparserhfoo
#define fooconfparserhfoo
***/
#include <stdio.h>
+#include <stdbool.h>
/* An abstract parser for simple, line based, shallow configuration
* files consisting of variable assignments only. */
-typedef int (*ConfigParserCallback)(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
+/* Prototype for a parser for a specific configuration setting */
+typedef int (*ConfigParserCallback)(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata);
-/* Wraps info for parsing a specific configuration variable */
-typedef struct ConfigItem {
- const char *lvalue; /* name of the variable */
- ConfigParserCallback parse; /* Function that is called to parse the variable's value */
- void *data; /* Where to store the variable's data */
- const char *section;
-} ConfigItem;
+/* Wraps information for parsing a specific configuration variable, to
+ * be stored in a simple array */
+typedef struct ConfigTableItem {
+ const char *section; /* Section */
+ const char *lvalue; /* Name of the variable */
+ ConfigParserCallback parse; /* Function that is called to parse the variable's value */
+ int ltype; /* Distinguish different variables passed to the same callback */
+ void *data; /* Where to store the variable's data */
+} ConfigTableItem;
-/* The configuration file parsing routine. Expects a table of
- * config_items in *t that is terminated by an item where lvalue is
- * NULL */
-int config_parse(const char *filename, FILE *f, const char* const * sections, const ConfigItem *t, void *userdata);
+/* Wraps information for parsing a specific configuration variable, to
+ * ve srored in a gperf perfect hashtable */
+typedef struct ConfigPerfItem {
+ const char *section_and_lvalue; /* Section + "." + name of the variable */
+ ConfigParserCallback parse; /* Function that is called to parse the variable's value */
+ int ltype; /* Distinguish different variables passed to the same callback */
+ size_t offset; /* Offset where to store data, from the beginning of userdata */
+} ConfigPerfItem;
+
+/* Prototype for a low-level gperf lookup function */
+typedef const ConfigPerfItem* (*ConfigPerfItemLookup)(const char *section_and_lvalue, unsigned length);
+
+/* Prototype for a generic high-level lookup function */
+typedef int (*ConfigItemLookup)(
+ void *table,
+ const char *section,
+ const char *lvalue,
+ ConfigParserCallback *func,
+ int *ltype,
+ void **data,
+ void *userdata);
+
+/* Linear table search implementation of ConfigItemLookup, based on
+ * ConfigTableItem arrays */
+int config_item_table_lookup(void *table, const char *section, const char *lvalue, ConfigParserCallback *func, int *ltype, void **data, void *userdata);
+
+/* gperf implementation of ConfigItemLookup, based on gperf
+ * ConfigPerfItem tables */
+int config_item_perf_lookup(void *table, const char *section, const char *lvalue, ConfigParserCallback *func, int *ltype, void **data, void *userdata);
+
+int config_parse(
+ const char *filename,
+ FILE *f,
+ const char *sections, /* nulstr */
+ ConfigItemLookup lookup,
+ void *table,
+ bool relaxed,
+ void *userdata);
/* Generic parsers */
-int config_parse_int(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
-int config_parse_unsigned(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
-int config_parse_size(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
-int config_parse_bool(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
-int config_parse_string(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
-int config_parse_path(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
-int config_parse_strv(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
-int config_parse_path_strv(const char *filename, unsigned line, const char *section, const char *lvalue, const char *rvalue, void *data, void *userdata);
+int config_parse_int(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_unsigned(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_long(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_uint64(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_bytes_size(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_bytes_off(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_bool(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_tristate(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_string(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_path(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_strv(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_path_strv(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_usec(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_mode(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+
+#define DEFINE_CONFIG_PARSE_ENUM(function,name,type,msg) \
+ int function( \
+ const char *filename, \
+ unsigned line, \
+ const char *section, \
+ const char *lvalue, \
+ int ltype, \
+ const char *rvalue, \
+ void *data, \
+ void *userdata) { \
+ \
+ type *i = data, x; \
+ \
+ assert(filename); \
+ assert(lvalue); \
+ assert(rvalue); \
+ assert(data); \
+ \
+ if ((x = name##_from_string(rvalue)) < 0) { \
+ log_error("[%s:%u] " msg ", ignoring: %s", filename, line, rvalue); \
+ return 0; \
+ } \
+ \
+ *i = x; \
+ \
+ return 0; \
+ }
#endif
~ianmdlvl / elogind.git / blobdiff