-/* Copyright (c) 2016. The SimGrid Team.
+/* Copyright (c) 2004-2014,2016. The SimGrid Team.
* All rights reserved. */
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
+#include <stdio.h>
+#include <cerrno>
+#include <cstring>
+#include <climits>
#include <functional>
+#include <stdexcept>
#include <string>
+#include <type_traits>
#include <xbt/config.h>
#include <xbt/config.hpp>
+#include "xbt/misc.h"
+#include "xbt/sysdep.h"
+#include "xbt/log.h"
+#include "xbt/ex.h"
+#include "xbt/dynar.h"
+#include "xbt/dict.h"
+
+// *****
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_cfg, xbt, "configuration support");
+
+XBT_EXPORT_NO_IMPORT(xbt_cfg_t) simgrid_config = NULL;
+
+namespace {
+
+static inline
+void increment(e_xbt_cfgelm_type_t& type)
+{
+ typedef std::underlying_type<e_xbt_cfgelm_type_t>::type underlying_type;
+ type = (e_xbt_cfgelm_type_t) ((underlying_type) type + 1);
+}
+
+}
+
+static const char *xbt_cfgelm_type_name[xbt_cfgelm_type_count] = {
+ "int", "double", "string", "boolean", "any"
+};
+
+const struct xbt_boolean_couple xbt_cfgelm_boolean_values[] = {
+ { "yes", "no"},
+ { "on", "off"},
+ {"true", "false"},
+ { "1", "0"},
+ { NULL, NULL}
+};
+
+namespace simgrid {
+namespace config {
+ struct ConfigurationElement ;
+ class Config;
+}
+}
+
+/* Retrieve the variable we'll modify */
+static simgrid::config::ConfigurationElement* xbt_cfgelm_get(xbt_cfg_t cfg, const char *name, e_xbt_cfgelm_type_t type);
+
+namespace simgrid {
+namespace config {
+
+// A configuration variable:
+struct ConfigurationElement {
+ /* Description */
+ std::string desc;
+
+ /* Allowed type of the variable */
+ e_xbt_cfgelm_type_t type;
+ bool isdefault = true;
+
+ /* Callback */
+ xbt_cfg_cb_t cb_set = nullptr;
+
+ /* Advanced callback (for xbt_cfgelm_string only) */
+ std::function<void(const char* value)> callback;
+
+ union {
+ int int_content;
+ double double_content;
+ char* string_content;
+ bool boolean_content;
+ };
+
+ ~ConfigurationElement()
+ {
+ XBT_DEBUG("Frees cfgelm %p", this);
+ switch(this->type) {
+ case xbt_cfgelm_int:
+ case xbt_cfgelm_double:
+ case xbt_cfgelm_boolean:
+ break;
+ case xbt_cfgelm_string:
+ free(string_content);
+ break;
+ default:
+ xbt_die("Unexpected config type");
+ }
+ }
+
+};
+
+class Config {
+ // name -> ConfigElement:
+ xbt_dict_t options;
+ // alias -> xbt_dict_elm_t from options:
+ xbt_dict_t aliases;
+
+public:
+ Config();
+ ~Config();
+
+ // No copy:
+ Config(Config const&) = delete;
+ Config& operator=(Config const&) = delete;
+
+ xbt_dictelm_t getElement(const char* name);
+ ConfigurationElement* operator[](const char* name);
+ void alias(const char* realname, const char* aliasname);
+
+ simgrid::config::ConfigurationElement* registerOption(
+ const char *name, const char *desc, e_xbt_cfgelm_type_t type,
+ xbt_cfg_cb_t cb_set);
+
+ // Debug:
+ void dump(const char *name, const char *indent);
+ void showAliases();
+ void help();
+};
+
+/* Internal stuff used in cache to free a variable */
+static void xbt_cfgelm_free(void *data)
+{
+ if (data)
+ delete (simgrid::config::ConfigurationElement*) data;
+}
+
+Config::Config() :
+ options(xbt_dict_new_homogeneous(xbt_cfgelm_free)),
+ aliases(xbt_dict_new_homogeneous(NULL))
+{}
+
+Config::~Config()
+{
+ XBT_DEBUG("Frees cfg set %p", this);
+ xbt_dict_free(&this->options);
+ xbt_dict_free(&this->aliases);
+}
+
+inline
+xbt_dictelm_t Config::getElement(const char* name)
+{
+ // We are interested in the options dictelm:
+ xbt_dictelm_t res = xbt_dict_get_elm_or_null(options, name);
+ if (res)
+ return res;
+ // The aliases dict stores pointers to the options dictelm:
+ res = (xbt_dictelm_t) xbt_dict_get_or_null(aliases, name);
+ if (res)
+ XBT_INFO("Option %s has been renamed to %s. Consider switching.", name, res->key);
+ return res;
+}
+
+inline
+ConfigurationElement* Config::operator[](const char* name)
+{
+ xbt_dictelm_t elm = getElement(name);
+ if (elm)
+ return (ConfigurationElement*) elm->content;
+ else
+ return nullptr;
+}
+
+void Config::alias(const char* realname, const char* aliasname)
+{
+ xbt_assert(this->getElement(aliasname) == nullptr, "Alias '%s' already.", aliasname);
+ xbt_dictelm_t element = this->getElement(realname);
+ xbt_assert(element, "Cannot define an alias to the non-existing option '%s'.", realname);
+ xbt_dict_set(this->aliases, aliasname, element, NULL);
+}
+
+/** @brief Dump a config set for debuging purpose
+ *
+ * @param name The name to give to this config set
+ * @param indent what to write at the beginning of each line (right number of spaces)
+ */
+void Config::dump(const char *name, const char *indent)
+{
+ xbt_dict_t dict = this->options;
+ xbt_dict_cursor_t cursor = NULL;
+ simgrid::config::ConfigurationElement* variable = NULL;
+ char *key = NULL;
+
+ if (name)
+ printf("%s>> Dumping of the config set '%s':\n", indent, name);
+
+ xbt_dict_foreach(dict, cursor, key, variable) {
+ const char* type_name = xbt_cfgelm_type_name[variable->type];
+ switch (variable->type) {
+ case xbt_cfgelm_int:
+ printf("%s %s: ()%s) %i", indent, key, type_name, variable->int_content);
+ break;
+ case xbt_cfgelm_double:
+ printf("%s %s: ()%s) %f", indent, key, type_name, variable->double_content);
+ break;
+ case xbt_cfgelm_string:
+ printf("%s %s: ()%s) %s", indent, key, type_name, variable->string_content);
+ break;
+ case xbt_cfgelm_boolean:
+ printf("%s %s: ()%s) %s", indent, key, type_name,
+ variable->boolean_content ? "true" : "false");
+ break;
+ default:
+ printf("%s Invalid type!!\n", indent);
+ break;
+ }
+ }
+
+ if (name)
+ printf("%s<< End of the config set '%s'\n", indent, name);
+ fflush(stdout);
+
+ xbt_dict_cursor_free(&cursor);
+}
+
+simgrid::config::ConfigurationElement* Config::registerOption(
+ const char *name, const char *desc, e_xbt_cfgelm_type_t type, xbt_cfg_cb_t cb_set)
+{
+ xbt_assert(type >= xbt_cfgelm_int && type <= xbt_cfgelm_boolean,
+ "type of %s not valid (%d should be between %d and %d)",
+ name, (int)type, xbt_cfgelm_int, xbt_cfgelm_boolean);
+
+ simgrid::config::ConfigurationElement* res = (simgrid::config::ConfigurationElement*) xbt_dict_get_or_null(this->options, name);
+ xbt_assert(NULL == res, "Refusing to register the config element '%s' twice.", name);
+
+ res = new simgrid::config::ConfigurationElement();
+ XBT_DEBUG("Register cfg elm %s (%s) (%s (=%d) @%p in set %p)",
+ name, desc, xbt_cfgelm_type_name[type], (int)type, res, this);
+ res->type = type;
+ res->cb_set = cb_set;
+ if (desc)
+ res->desc = desc;
+
+ // Set a default default value:
+ switch (type) {
+ case xbt_cfgelm_int:
+ res->int_content = 0;
+ break;
+ case xbt_cfgelm_double:
+ res->double_content = 0.0;
+ break;
+ case xbt_cfgelm_string:
+ res->string_content = nullptr;
+ break;
+ case xbt_cfgelm_boolean:
+ res->boolean_content = false;
+ break;
+ default:
+ XBT_ERROR("%d is an invalid type code", (int)type);
+ break;
+ }
+
+ xbt_dict_set(this->options, name, res, NULL);
+ return res;
+}
+
+/** @brief Displays the declared aliases and their description */
+void Config::showAliases()
+{
+ xbt_dict_cursor_t dict_cursor;
+ unsigned int dynar_cursor;
+ xbt_dictelm_t dictel;
+ char *name;
+ xbt_dynar_t names = xbt_dynar_new(sizeof(char *), NULL);
+
+ xbt_dict_foreach(this->aliases, dict_cursor, name, dictel)
+ xbt_dynar_push(names, &name);
+ xbt_dynar_sort_strings(names);
+
+ xbt_dynar_foreach(names, dynar_cursor, name) {
+ simgrid::config::ConfigurationElement* variable = (*this)[name];
+ if (variable)
+ printf(" %s: %s\n", name, variable->desc.c_str());
+ }
+}
+
+/** @brief Displays the declared options and their description */
+void Config::help()
+{
+ xbt_dict_cursor_t dict_cursor;
+ unsigned int dynar_cursor;
+ simgrid::config::ConfigurationElement* variable;
+ char *name;
+ xbt_dynar_t names = xbt_dynar_new(sizeof(char *), NULL);
+
+ xbt_dict_foreach(this->options, dict_cursor, name, variable)
+ xbt_dynar_push(names, &name);
+ xbt_dynar_sort_strings(names);
+
+ xbt_dynar_foreach(names, dynar_cursor, name) {
+ variable = (simgrid::config::ConfigurationElement*) xbt_dict_get(this->options, name);
+
+ printf(" %s: %s\n", name, variable->desc.c_str());
+ printf(" Type: %s; ", xbt_cfgelm_type_name[variable->type]);
+ printf("Current value: ");
+
+ switch (variable->type) {
+ case xbt_cfgelm_int:
+ printf("%d\n", variable->int_content);
+ break;
+ case xbt_cfgelm_double:
+ printf("%f\n", variable->double_content);
+ break;
+ case xbt_cfgelm_string:
+ printf("'%s'\n", variable->string_content);
+ break;
+ case xbt_cfgelm_boolean:
+ printf("'%s'\n", variable->boolean_content ? "true" : "false");
+ break;
+ default:
+ printf("Invalid type!!\n");
+ break;
+ }
+
+ }
+ xbt_dynar_free(&names);
+}
+
+}
+}
+
+// C bindings:
+
+/** @brief Constructor */
+xbt_cfg_t xbt_cfg_new(void) { return new simgrid::config::Config(); }
+/** @brief Destructor */
+void xbt_cfg_free(xbt_cfg_t * cfg) { delete *cfg; }
+
+void xbt_cfg_dump(const char *name, const char *indent, xbt_cfg_t cfg)
+{
+ cfg->dump(name, indent);
+}
+
+/*----[ Registering stuff ]-----------------------------------------------*/
+/** @brief Register an element within a config set
+ *
+ * @param cfg the config set
+ * @param name the name of the config element
+ * @param desc a description for this item (used by xbt_cfg_help())
+ * @param type the type of the config element
+ * @param cb_set callback function called when a value is set
+ */
+static simgrid::config::ConfigurationElement* xbt_cfg_register(
+ xbt_cfg_t * cfg, const char *name, const char *desc, e_xbt_cfgelm_type_t type, xbt_cfg_cb_t cb_set)
+{
+ if (*cfg == NULL)
+ *cfg = xbt_cfg_new();
+ return (*cfg)->registerOption(name, desc, type, cb_set);
+}
+
+void xbt_cfg_register_double(const char *name, double default_value,xbt_cfg_cb_t cb_set, const char *desc)
+{
+ xbt_cfg_register(&simgrid_config, name, desc, xbt_cfgelm_double, cb_set);
+ xbt_cfg_setdefault_double(name, default_value);
+}
+void xbt_cfg_register_int(const char *name, int default_value,xbt_cfg_cb_t cb_set, const char *desc)
+{
+ xbt_cfg_register(&simgrid_config, name, desc, xbt_cfgelm_int, cb_set);
+ xbt_cfg_setdefault_int(name, default_value);
+}
+void xbt_cfg_register_string(const char *name, const char *default_value, xbt_cfg_cb_t cb_set, const char *desc)
+{
+ xbt_cfg_register(&simgrid_config,name,desc,xbt_cfgelm_string,cb_set);
+ xbt_cfg_setdefault_string(name, default_value);
+}
+void xbt_cfg_register_boolean(const char *name, const char*default_value,xbt_cfg_cb_t cb_set, const char *desc)
+{
+ xbt_cfg_register(&simgrid_config,name,desc,xbt_cfgelm_boolean,cb_set);
+ xbt_cfg_setdefault_boolean(name, default_value);
+}
+
+void xbt_cfg_register_alias(const char *realname, const char *aliasname)
+{
+ if (simgrid_config == NULL)
+ simgrid_config = xbt_cfg_new();
+ simgrid_config->alias(realname, aliasname);
+}
+
+/**
+ * @brief Parse a string and register the stuff described.
+ *
+ * @param cfg the config set
+ * @param entry a string describing the element to register
+ *
+ * The string may consist in several variable descriptions separated by a space.
+ * Each of them must use the following syntax: \<name\>:\<type\>
+ * with type being one of 'string','int','bool' or 'double'.
+ *
+ * Note that this does not allow to set the description, so you should prefer the other interface
+ */
+void xbt_cfg_register_str(xbt_cfg_t * cfg, const char *entry)
+{
+ char *entrycpy = xbt_strdup(entry);
+ char *tok;
+
+ e_xbt_cfgelm_type_t type;
+ XBT_DEBUG("Register string '%s'", entry);
+
+ tok = strchr(entrycpy, ':');
+ xbt_assert(tok, "Invalid config element descriptor: %s; Should be <name>:<type>", entry);
+ *(tok++) = '\0';
+
+ for (type = (e_xbt_cfgelm_type_t)0; type < xbt_cfgelm_type_count && strcmp(tok, xbt_cfgelm_type_name[type]); increment(type));
+ xbt_assert(type < xbt_cfgelm_type_count,
+ "Invalid type in config element descriptor: %s; Should be one of 'string', 'int' or 'double'.", entry);
+
+ xbt_cfg_register(cfg, entrycpy, NULL, type, NULL);
+
+ free(entrycpy); /* strdup'ed by dict mechanism, but cannot be const */
+}
+
+void xbt_cfg_aliases(void) { simgrid_config->showAliases(); }
+void xbt_cfg_help(void) { simgrid_config->help(); }
+
+static simgrid::config::ConfigurationElement* xbt_cfgelm_get(xbt_cfg_t cfg, const char *name, e_xbt_cfgelm_type_t type)
+{
+ simgrid::config::ConfigurationElement* res = (*cfg)[name];
+
+ if (!res) {
+ xbt_cfg_help();
+ fflush(stdout);
+ THROWF(not_found_error, 0, "No registered variable '%s' in this config set.", name);
+ }
+
+ xbt_assert(type == xbt_cfgelm_any || res->type == type,
+ "You tried to access to the config element %s as an %s, but its type is %s.",
+ name, xbt_cfgelm_type_name[type], xbt_cfgelm_type_name[res->type]);
+ return res;
+}
+
+/** @brief Get the type of this variable in that configuration set
+ *
+ * @param cfg the config set
+ * @param name the name of the element
+ *
+ * @return the type of the given element
+ */
+e_xbt_cfgelm_type_t xbt_cfg_get_type(xbt_cfg_t cfg, const char *name)
+{
+ simgrid::config::ConfigurationElement* variable = (*cfg)[name];
+ if (!variable)
+ THROWF(not_found_error, 0, "Can't get the type of '%s' since this variable does not exist", name);
+ XBT_DEBUG("type in variable = %d", (int)variable->type);
+ return variable->type;
+}
+
+/*----[ Setting ]---------------------------------------------------------*/
+/** @brief va_args version of xbt_cfg_set
+ *
+ * @param cfg config set to fill
+ * @param name variable name
+ * @param pa variable value
+ *
+ * Add some values to the config set.
+ */
+void xbt_cfg_set_vargs(xbt_cfg_t cfg, const char *name, va_list pa)
+{
+ char *str;
+ int i;
+ double d;
+ e_xbt_cfgelm_type_t type = xbt_cfgelm_type_count; /* Set a dummy value to make gcc happy. It cannot get uninitialized */
+
+ xbt_ex_t e;
+
+ TRY {
+ type = xbt_cfg_get_type(cfg, name);
+ }
+ CATCH(e) {
+ if (e.category == not_found_error) {
+ xbt_ex_free(e);
+ THROWF(not_found_error, 0, "Can't set the property '%s' since it's not registered", name);
+ }
+ RETHROW;
+ }
+
+ switch (type) {
+ case xbt_cfgelm_string:
+ str = va_arg(pa, char *);
+ xbt_cfg_set_string(name, str);
+ break;
+ case xbt_cfgelm_int:
+ i = va_arg(pa, int);
+ xbt_cfg_set_int(name, i);
+ break;
+ case xbt_cfgelm_double:
+ d = va_arg(pa, double);
+ xbt_cfg_set_double(name, d);
+ break;
+ case xbt_cfgelm_boolean:
+ str = va_arg(pa, char *);
+ xbt_cfg_set_boolean(name, str);
+ break;
+ default:
+ xbt_die("Config element variable %s not valid (type=%d)", name, (int)type);
+ }
+}
+
+/** @brief Add a NULL-terminated list of pairs {(char*)key, value} to the set
+ *
+ * @param cfg config set to fill
+ * @param name variable name
+ * @param ... variable value
+ */
+void xbt_cfg_set(xbt_cfg_t cfg, const char *name, ...)
+{
+ va_list pa;
+
+ va_start(pa, name);
+ xbt_cfg_set_vargs(cfg, name, pa);
+ va_end(pa);
+}
+
+/** @brief Add values parsed from a string into a config set
+ *
+ * @param options a string containing the content to add to the config set. This is a '\\t',' ' or '\\n' or ','
+ * separated list of variables. Each individual variable is like "[name]:[value]" where [name] is the name of an
+ * already registered variable, and [value] conforms to the data type under which this variable was registered.
+ *
+ * @todo This is a crude manual parser, it should be a proper lexer.
+ */
+void xbt_cfg_set_parse(const char *options)
+{
+ if (!options || !strlen(options)) { /* nothing to do */
+ return;
+ }
+ char *optionlist_cpy = xbt_strdup(options);
+
+ XBT_DEBUG("List to parse and set:'%s'", options);
+ char *option = optionlist_cpy;
+ while (1) { /* breaks in the code */
+ if (!option)
+ break;
+ char *name = option;
+ int len = strlen(name);
+ XBT_DEBUG("Still to parse and set: '%s'. len=%d; option-name=%ld", name, len, (long) (option - name));
+
+ /* Pass the value */
+ while (option - name <= (len - 1) && *option != ' ' && *option != '\n' && *option != '\t' && *option != ',') {
+ XBT_DEBUG("Take %c.", *option);
+ option++;
+ }
+ if (option - name == len) {
+ XBT_DEBUG("Boundary=EOL");
+ option = NULL; /* don't do next iteration */
+ } else {
+ XBT_DEBUG("Boundary on '%c'. len=%d;option-name=%ld", *option, len, (long) (option - name));
+ /* Pass the following blank chars */
+ *(option++) = '\0';
+ while (option - name < (len - 1) && (*option == ' ' || *option == '\n' || *option == '\t')) {
+ /* fprintf(stderr,"Ignore a blank char.\n"); */
+ option++;
+ }
+ if (option - name == len - 1)
+ option = NULL; /* don't do next iteration */
+ }
+ XBT_DEBUG("parse now:'%s'; parse later:'%s'", name, option);
+
+ if (name[0] == ' ' || name[0] == '\n' || name[0] == '\t')
+ continue;
+ if (!strlen(name))
+ break;
+
+ char *val = strchr(name, ':');
+ xbt_assert(val, "Option '%s' badly formatted. Should be of the form 'name:value'", name);
+ /* don't free(optionlist_cpy) if the assert fails, 'name' points inside it */
+ *(val++) = '\0';
+
+ if (strncmp(name, "contexts/", strlen("contexts/")) && strncmp(name, "path", strlen("path")))
+ XBT_INFO("Configuration change: Set '%s' to '%s'", name, val);
+
+ TRY {
+ xbt_cfg_set_as_string(name,val);
+ } CATCH_ANONYMOUS {
+ free(optionlist_cpy);
+ RETHROW;
+ }
+ }
+ free(optionlist_cpy);
+}
+
+/** @brief Set the value of a variable, using the string representation of that value
+ *
+ * @param key name of the variable to modify
+ * @param value string representation of the value to set
+ *
+ * @return the first char after the parsed value in val
+ */
+
+void *xbt_cfg_set_as_string(const char *key, const char *value)
+{
+ simgrid::config::ConfigurationElement* variable = (*simgrid_config)[key];
+ if (variable == nullptr)
+ THROWF(not_found_error, 0, "No registered variable corresponding to '%s'.", key);
+
+ char *ret;
+ int i;
+ double d;
+
+ switch (variable->type) {
+ case xbt_cfgelm_string:
+ xbt_cfg_set_string(key, value); /* throws */
+ break;
+ case xbt_cfgelm_int:
+ i = strtol(value, &ret, 0);
+ if (ret == value) {
+ xbt_die("Value of option %s not valid. Should be an integer", key);
+ }
+ xbt_cfg_set_int(key, i); /* throws */
+ break;
+ case xbt_cfgelm_double:
+ d = strtod(value, &ret);
+ if (ret == value) {
+ xbt_die("Value of option %s not valid. Should be a double", key);
+ }
+ xbt_cfg_set_double(key, d); /* throws */
+ break;
+ case xbt_cfgelm_boolean:
+ xbt_cfg_set_boolean(key, value); /* throws */
+ ret = (char *)value + strlen(value);
+ break;
+ default:
+ THROWF(unknown_error, 0, "Type of config element %s is not valid.", key);
+ break;
+ }
+ return ret;
+}
+
+/** @brief Set an integer value to \a name within \a cfg if it wasn't changed yet
+ *
+ * This is useful to change the default value of a variable while allowing
+ * users to override it with command line arguments
+ */
+void xbt_cfg_setdefault_int(const char *name, int val)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_int);
+
+ if (variable->isdefault){
+ xbt_cfg_set_int(name, val);
+ variable->isdefault = true;
+ } else
+ XBT_DEBUG("Do not override configuration variable '%s' with value '%d' because it was already set.", name, val);
+}
+
+/** @brief Set an integer value to \a name within \a cfg if it wasn't changed yet
+ *
+ * This is useful to change the default value of a variable while allowing
+ * users to override it with command line arguments
+ */
+void xbt_cfg_setdefault_double(const char *name, double val)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_double);
+
+ if (variable->isdefault) {
+ xbt_cfg_set_double(name, val);
+ variable->isdefault = true;
+ } else
+ XBT_DEBUG("Do not override configuration variable '%s' with value '%f' because it was already set.", name, val);
+}
+
+/** @brief Set a string value to \a name within \a cfg if it wasn't changed yet
+ *
+ * This is useful to change the default value of a variable while allowing
+ * users to override it with command line arguments
+ */
+void xbt_cfg_setdefault_string(const char *name, const char *val)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_string);
+
+ if (variable->isdefault){
+ xbt_cfg_set_string(name, val);
+ variable->isdefault = true;
+ } else
+ XBT_DEBUG("Do not override configuration variable '%s' with value '%s' because it was already set.", name, val);
+}
+
+/** @brief Set an boolean value to \a name within \a cfg if it wasn't changed yet
+ *
+ * This is useful to change the default value of a variable while allowing
+ * users to override it with command line arguments
+ */
+void xbt_cfg_setdefault_boolean(const char *name, const char *val)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_boolean);
+
+ if (variable->isdefault){
+ xbt_cfg_set_boolean(name, val);
+ variable->isdefault = true;
+ }
+ else
+ XBT_DEBUG("Do not override configuration variable '%s' with value '%s' because it was already set.", name, val);
+}
+
+/** @brief Set an integer value to \a name within \a cfg
+ *
+ * @param name the name of the variable
+ * @param val the value of the variable
+ */
+void xbt_cfg_set_int(const char *name, int val)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_int);
+ variable->int_content = val;
+ if (variable->cb_set)
+ variable->cb_set(name);
+ variable->isdefault = false;
+}
+
+/** @brief Set or add a double value to \a name within \a cfg
+ *
+ * @param name the name of the variable
+ * @param val the double to set
+ */
+void xbt_cfg_set_double(const char *name, double val)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_double);
+ variable->double_content = val;
+ if (variable->cb_set)
+ variable->cb_set(name);
+ variable->isdefault = false;
+}
+
+/** @brief Set or add a string value to \a name within \a cfg
+ *
+ * @param cfg the config set
+ * @param name the name of the variable
+ * @param val the value to be added
+ *
+ */
+void xbt_cfg_set_string(const char *name, const char *val)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_string);
+ free(variable->string_content);
+ variable->string_content = xbt_strdup(val);
+ if (variable->cb_set)
+ variable->cb_set(name);
+ variable->isdefault = false;
+
+ if (variable->callback) {
+ try {
+ variable->callback(val);
+ }
+ catch(std::range_error& e) {
+ xbt_die("Invalid flag %s=%s: %s", val, name, e.what());
+ }
+ catch(std::exception& e) {
+ xbt_die("Error for flag %s=%s: %s", val, name, e.what());
+ }
+ catch(...) {
+ xbt_die("Error for flag %s=%s", val, name);
+ }
+ }
+}
+
+/** @brief Set or add a boolean value to \a name within \a cfg
+ *
+ * @param name the name of the variable
+ * @param val the value of the variable
+ */
+void xbt_cfg_set_boolean(const char *name, const char *val)
+{
+ int bval=-1;
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_boolean);
+
+ for (int i = 0; xbt_cfgelm_boolean_values[i].true_val != NULL; i++) {
+ if (strcmp(val, xbt_cfgelm_boolean_values[i].true_val) == 0){
+ bval = 1;
+ break;
+ }
+ if (strcmp(val, xbt_cfgelm_boolean_values[i].false_val) == 0){
+ bval = 0;
+ break;
+ }
+ }
+ xbt_assert(bval != -1, "Value of option '%s' not valid. Should be a boolean (yes,no,on,off,true,false,0,1)", val);
+ variable->boolean_content = bval;
+ if (variable->cb_set)
+ variable->cb_set(name);
+ variable->isdefault = false;
+}
+
+
+/* Say if the value is the default value */
+int xbt_cfg_is_default_value(const char *name)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_any);
+ return variable->isdefault;
+}
+
+/*----[ Getting ]---------------------------------------------------------*/
+/** @brief Retrieve an integer value of a variable (get a warning if not uniq)
+ *
+ * @param name the name of the variable
+ *
+ * Returns the first value from the config set under the given name.
+ */
+int xbt_cfg_get_int(const char *name)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_int);
+ return variable->int_content;
+}
+
+/** @brief Retrieve a double value of a variable (get a warning if not uniq)
+ *
+ * @param cfg the config set
+ * @param name the name of the variable
+ *
+ * Returns the first value from the config set under the given name.
+ */
+double xbt_cfg_get_double(const char *name)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_double);
+ return variable->double_content;
+}
+
+/** @brief Retrieve a string value of a variable (get a warning if not uniq)
+ *
+ * @param cfg the config set
+ * @param name the name of the variable
+ *
+ * Returns the first value from the config set under the given name.
+ * If there is more than one value, it will issue a warning.
+ * Returns NULL if there is no value.
+ *
+ * \warning the returned value is the actual content of the config set
+ */
+char *xbt_cfg_get_string(const char *name)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_string);
+ return variable->string_content;
+}
+
+/** @brief Retrieve a boolean value of a variable (get a warning if not uniq)
+ *
+ * @param cfg the config set
+ * @param name the name of the variable
+ *
+ * Returns the first value from the config set under the given name.
+ * If there is more than one value, it will issue a warning.
+ */
+int xbt_cfg_get_boolean(const char *name)
+{
+ simgrid::config::ConfigurationElement* variable = xbt_cfgelm_get(simgrid_config, name, xbt_cfgelm_boolean);
+ return variable->boolean_content;
+}
namespace simgrid {
namespace config {
-static void callCallback(const char* name, void* data)
+bool parseBool(const char* value)
+{
+ for (int i = 0; xbt_cfgelm_boolean_values[i].true_val != NULL; i++) {
+ if (std::strcmp(value, xbt_cfgelm_boolean_values[i].true_val) == 0)
+ return true;
+ if (std::strcmp(value, xbt_cfgelm_boolean_values[i].false_val) == 0)
+ return false;
+ }
+ throw std::range_error("not a boolean");
+}
+
+double parseDouble(const char* value)
{
- (*(std::function<void(const char*)>*) data)(name);
+ char* end;
+ errno = 0;
+ double res = std::strtod(value, &end);
+ if (errno == ERANGE)
+ throw std::range_error("out of range");
+ else if (errno)
+ xbt_die("Unexpected errno");
+ if (end == value || *end != '\0')
+ throw std::range_error("invalid double");
+ else
+ return res;
}
-static void freeCallback(void* data)
+long int parseLong(const char* value)
{
- delete (std::function<void(const char*)>*) data;
+ char* end;
+ errno = 0;
+ long int res = std::strtol(value, &end, 0);
+ if (errno) {
+ if (res == LONG_MIN && errno == ERANGE)
+ throw std::range_error("underflow");
+ else if (res == LONG_MAX && errno == ERANGE)
+ throw std::range_error("overflow");
+ xbt_die("Unexpected errno");
+ }
+ if (end == value || *end != '\0')
+ throw std::range_error("invalid integer");
+ else
+ return res;
}
-void registerConfig(const char* name, const char* description,
- e_xbt_cfgelm_type_t type,
- std::function<void(const char*)> callback)
+void declareFlag(const char* name, const char* description,
+ std::function<void(const char* value)> callback)
{
- std::function<void(const char*)>* code
- = new std::function<void(const char*)>(std::move(callback));
- xbt_cfg_register_ext(name, description, type,
- callCallback, code, freeCallback);
+ simgrid::config::ConfigurationElement* e = xbt_cfg_register(
+ &simgrid_config, name, description, xbt_cfgelm_string, NULL);
+ e->callback = std::move(callback);
}
}
-}
\ No newline at end of file
+}
+
+#ifdef SIMGRID_TEST
+
+#include <string>
+
+#include "xbt.h"
+#include "xbt/ex.h"
+
+#include <xbt/config.hpp>
+
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(xbt_cfg);
+
+XBT_TEST_SUITE("config", "Configuration support");
+
+static xbt_cfg_t make_set()
+{
+ xbt_cfg_t set = NULL;
+
+ xbt_log_threshold_set(&_XBT_LOGV(xbt_cfg), xbt_log_priority_critical);
+ xbt_cfg_register_str(&set, "speed:int");
+ xbt_cfg_register_str(&set, "peername:string");
+ xbt_cfg_register_str(&set, "user:string");
+
+ return set;
+} /* end_of_make_set */
+
+XBT_PUBLIC_DATA(xbt_cfg_t) simgrid_config;
+
+XBT_TEST_UNIT("memuse", test_config_memuse, "Alloc and free a config set")
+{
+ simgrid_config = make_set();
+ xbt_test_add("Alloc and free a config set");
+ xbt_cfg_set_parse("peername:veloce user:bidule");
+ xbt_cfg_free(&simgrid_config);
+}
+
+XBT_TEST_UNIT("use", test_config_use, "Data retrieving tests")
+{
+ simgrid_config = make_set();
+ xbt_test_add("Get a single value");
+ {
+ /* get_single_value */
+ int ival;
+
+ xbt_cfg_set_parse("peername:toto:42 speed:42");
+ ival = xbt_cfg_get_int("speed");
+ if (ival != 42)
+ xbt_test_fail("Speed value = %d, I expected 42", ival);
+ }
+
+ xbt_test_add("Access to a non-existant entry");
+ {
+ xbt_ex_t e;
+
+ TRY {
+ xbt_cfg_set_parse("color:blue");
+ } CATCH(e) {
+ if (e.category != not_found_error)
+ xbt_test_exception(e);
+ xbt_ex_free(e);
+ }
+ }
+ xbt_cfg_free(&simgrid_config);
+}
+
+XBT_TEST_UNIT("c++flags", test_config_cxx_flags, "C++ flags")
+{
+ simgrid_config = make_set();
+ xbt_test_add("C++ declaration of flags");
+
+ simgrid::config::Flag<int> int_flag("int", "", 0);
+ simgrid::config::Flag<std::string> string_flag("string", "", "foo");
+ simgrid::config::Flag<double> double_flag("double", "", 0.32);
+ simgrid::config::Flag<bool> bool_flag1("bool1", "", false);
+ simgrid::config::Flag<bool> bool_flag2("bool2", "", true);
+
+ xbt_test_add("Parse values");
+ xbt_cfg_set_parse("int:42 string:bar double:8.0 bool1:true bool2:false");
+ xbt_test_assert(int_flag == 42, "Check int flag");
+ xbt_test_assert(string_flag == "bar", "Check string flag");
+ xbt_test_assert(double_flag == 8.0, "Check double flag");
+ xbt_test_assert(bool_flag1, "Check bool1 flag");
+ xbt_test_assert(!bool_flag2, "Check bool2 flag");
+
+ xbt_cfg_free(&simgrid_config);
+}
+
+#endif /* SIMGRID_TEST */
