beginning of refactored version

Signed-off-by: Mattias Andrée <maandree@operamail.com>

2 files changed, 422 insertions, 0 deletions

diff --git a/src/libargparser/argparser.c b/src/libargparser/argparser.c
new file mode 100644
index 0000000..d0aa957
--- /dev/null
+++ b/src/libargparser/argparser.c
@@ -0,0 +1,126 @@
+/**
+ * argparser – command line argument parser library
+ * 
+ * Copyright © 2013, 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library 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 Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "argparser.h"
+
+
+
+/**
+ * Dummy trigger
+ * 
+ * @param  user_data  User-data
+ * @param  used       The used option alternative
+ * @param  standard   The standard option alternative
+ */
+void args_noop_trigger(void* user_data, const char* used, const char* standard)
+{
+  (void) user_data;
+  (void) used;
+  (void) standard;
+}
+
+
+/**
+ * Dummy trigger
+ * 
+ * @param  user_data  User-data
+ * @param  used       The used option alternative
+ * @param  standard   The standard option alternative
+ * @param  value      The used value
+ */
+void args_noop_trigger_v(void* user_data, const char* used, const char* standard, char* value)
+{
+  (void) user_data;
+  (void) used;
+  (void) standard;
+  (void) value;
+}
+
+
+/**
+ * Stickless evaluator to always evaluates to false
+ * 
+ * @param   user_data  User-data
+ * @param   argument   The next argument
+ * @return             Whether the argument can be used without being sticky
+ */
+int args_no_stickless(void* user_data, const char* value)
+{
+  (void) user_data;
+  (void) value;
+  return 0;
+}
+
+
+/**
+ * Default stickless evaluator
+ * 
+ * @param   user_data  User-data
+ * @param   argument   The next argument
+ * @return             Whether the argument can be used without being sticky
+ */
+int args_default_stickless(void* user_data, const char* argument)
+{
+  (void) user_data;
+  return (*argument != '-') && (*argument != '+');
+}
+
+
+/**
+ * Evalutator for end argument of variadic options that always evalutes to false
+ * 
+ * @param   user_data  User-data
+ * @param   value      The  next argument
+ * @return             Whether the argument can be used without being sticky
+ */
+int args_no_variadic_end(void* user_data, char* value)
+{
+  (void) user_data;
+  (void) value;
+  return 0;
+}
+
+
+/**
+ * The standard abbrevation expander
+ * 
+ * @param   argument  The option that not recognised
+ * @param   options   All recognised options
+ * @param   count     The number of elements in `options`
+ * @return            The only possible expansion, otherwise `null`
+ */
+const char* args_standard_abbreviations(const char* argument, const char** options, size_t count)
+{
+  const char* rc = null;
+  size_t i;
+  for (i = 0; i < count; i++)
+    {
+      size_t match = 0;
+      const char* opt = *(options + i);
+      while (*(argument + match) && (*(opt + match) == *(argument + match)))
+	match++;
+      if (*(argument + match) == 0)
+	{
+	  if (rc)
+	    return null;
+	  rc = opt;
+	}
+    }
+  return rc;
+}
+
diff --git a/src/libargparser/argparser.h b/src/libargparser/argparser.h
new file mode 100644
index 0000000..af8477a
--- /dev/null
+++ b/src/libargparser/argparser.h
@@ -0,0 +1,296 @@
+/**
+ * argparser – command line argument parser library
+ * 
+ * Copyright © 2013, 2014  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This library 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 Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef ARGPARSER_H
+#define ARGPARSER_H
+
+
+#include <stddef.h>
+
+
+
+/**
+ * Option types
+ */
+typedef enum args_option_type
+  {
+    /**
+     * The option never takes any arguments
+     */
+    ARGUMENTLESS,
+    
+    /**
+     * The option takes the next argument
+     */
+    ARGUMENTED,
+    
+    /**
+     * The option may have an argument, either sticky
+     * or otherwise accepted by `stickless`
+     */
+    OPTARGUMENTED,
+    
+    /**
+     * The option takes all following options
+     */
+    VARIADIC
+    
+  } args_option_type_t;
+
+
+
+typedef struct args_option
+{
+  /**
+   * The type of the option
+   */
+  args_option_type_t type;
+  
+  /**
+   * Alterative option names
+   */
+  const char** alternatives;
+  
+  /**
+   * Number of elements in `alternatives`
+   */
+  size_t alternatives_count;
+  
+  /**
+   * Standard option name
+   */
+  const char* standard;
+  
+  /**
+   * Argument name, not for argumentless options
+   */
+  const char* argument;
+  
+  /**
+   * Help text, multi-line
+   */
+  const char* help;
+  
+  /**
+   * User-data used by methods associated with the option
+   */
+  void* user_data;
+  
+  /**
+   * Invoked when the option is used
+   * 
+   * @param  user_data  User-data
+   * @param  standard   The used option alternative
+   * @param  used       The standard option alternative
+   */
+  void (*trigger)(void* user_data, const char* standard, const char* used);
+  
+  /**
+   * Invoked when the option is used
+   * 
+   * @param  user_data  User-data
+   * @param  standard   The used option alternative
+   * @param  used       The standard option alternative
+   * @param  value      The used value
+   */
+  void (*trigger_v)(void* user_data, const char* standard, const char* used, char* value);
+  
+  /**
+   * Should return true if the next argument can used for the argument without being sticky
+   * 
+   * @param   user_data  User-data
+   * @param   argument   The next argument
+   * @return             Whether the argument can be used without being sticky
+   */
+  int (*stickless)(void* user_data, const char* argument);
+  
+  /**
+   * Should return true if the next argument can used for the argument
+   * 
+   * @param   user_data  User-data
+   * @param   value      The next argument
+   * @return             Whether the argument can be used
+   */
+  int (*variadic_end)(void* user_data, char* value);
+  
+} args_option_t;
+
+
+/**
+ * Settings for argument parser
+ */
+typedef struct args_settings
+{
+  /**
+   * Whether the Linux VT is being used
+   */
+  int linuxvt;
+  
+  /**
+   * Whether to use single dash/plus long options
+   */
+  int alternative;
+  
+  /**
+   * The name of the executed command, will be freed by the parser
+   */
+  char* program;
+  
+  /**
+   * Short, single-line, description of the program
+   */
+  const char* description;
+  
+  /**
+   * Formated, multi-line, usage text, `NULL` if none
+   */
+  const char* usage;
+  
+  /**
+   * Long, multi-line, description of the program, `NULL` if none
+   */
+  const char* longdescription;
+  
+  /**
+   * The error output stream
+   */
+  FILE* error_out;
+  
+  /**
+   * The warning output stream
+   */
+  FILE* warning_out;
+  
+  /**
+   * The help output stream
+   */
+  FILE* help_out;
+  
+  /**
+   * Abbreviated option expander, `null` for disabled
+   * 
+   * @param   argument  The option that not recognised
+   * @param   options   All recognised options
+   * @param   count     The number of elements in `options`
+   * @return            The only possible expansion, otherwise `NULL`
+   */
+  const char* (*abbreviations)(const char* stub, const char** options, size_t count);
+  
+} args_settings_t;
+
+
+/**
+ * The state of the parser
+ */
+typedef struct args_state
+{
+  /**
+  * The passed arguments
+  */
+  char** arguments;
+  
+  /**
+   * The number of passed arguments
+   */
+  size_t arguments_count;
+  
+  /**
+   * The number of unrecognised arguments
+   */
+  size_t unrecognised_count;
+  
+  /**
+   * The concatenation of `files` with blankspaces as delimiters, `null` if no files
+   */
+  char* message;
+  
+  /**
+   * The arguments passed that is not tied to an option
+   */
+  char** files;
+  
+  /**
+   * The number of elements in `args_files`
+   */
+  size_t files_count;
+  
+} args_state_t;
+
+
+
+/**
+ * Dummy trigger
+ * 
+ * @param  user_data  User-data
+ * @param  used       The used option alternative
+ * @param  standard   The standard option alternative
+ */
+void args_noop_trigger(void* user_data, const char* used, const char* standard);
+
+/**
+ * Dummy trigger
+ * 
+ * @param  user_data  User-data
+ * @param  used       The used option alternative
+ * @param  standard   The standard option alternative
+ * @param  value      The used value
+ */
+void args_noop_trigger_v(void* user_data, const char* used, const char* standard, char* value);
+
+/**
+ * Stickless evaluator to always evaluates to false
+ * 
+ * @param   user_data  User-data
+ * @param   argument   The next argument
+ * @return             Whether the argument can be used without being sticky
+ */
+int args_no_stickless(void* user_data, const char* value);
+
+/**
+ * Default stickless evaluator
+ * 
+ * @param   user_data  User-data
+ * @param   argument   The next argument
+ * @return             Whether the argument can be used without being sticky
+ */
+int args_default_stickless(void* user_data, const char* argument);
+
+/**
+ * Evalutator for end argument of variadic options that always evalutes to false
+ * 
+ * @param   user_data  User-data
+ * @param   value      The  next argument
+ * @return             Whether the argument can be used without being sticky
+ */
+int args_no_variadic_end(void* user_data, char* value);
+
+/**
+ * The standard abbrevation expander
+ * 
+ * @param   argument  The option that not recognised
+ * @param   options   All recognised options
+ * @param   count     The number of elements in `options`
+ * @return            The only possible expansion, otherwise `null`
+ */
+const char* args_standard_abbreviations(const char* argument, const char** options, size_t count);
+
+
+#endif
+
+
+