Onigmo (Oniguruma-mod) API  Version 6.1.2  2017/05/10

#include <onigmo.h>


# int onig_initialize(OnigEncoding use_encodings[], int num_encodings)

  Initialize library.
  This is added for compatibility to Oniguruma 6.0.
  Currently this is same as onig_init().

  arguments
  1 use_encodings:         array of encodings used in application.
  2 num_encodings:         number of encodings.


# int onig_init(void)

  Initialize library.

  Single thread program:
    You don't have to call it explicitly, because it is called in onig_new().
    However calling it is preferred.

  Multi thread program:
    You have to call it explicitly from a specific thread (normally the main
    thread) before you use onig_new(), because onig_init() is not thread safe.


# int onig_error_code_to_str(UChar* err_buf, OnigPosition err_code, ...)

  Get error message string.
  If this function is used for onig_new(),
  don't call this after the pattern argument of onig_new() is freed.

  normal return: error message string length

  arguments
  1 err_buf:              error message string buffer.
                          (required size: ONIG_MAX_ERROR_MESSAGE_LEN)
  2 err_code:             error code returned by other API functions.
  3 err_info (optional):  error info returned by onig_new().


# void onig_set_warn_func(OnigWarnFunc func)

  Set warning function.

  WARNING:
    '[', '-', ']' in character class without escape.
    ']' in pattern without escape.

  arguments
  1 func:     function pointer.    void (*func)(char* warning_message)


# void onig_set_verb_warn_func(OnigWarnFunc func)

  Set verbose warning function.

  WARNING:
    redundant nested repeat operator.

  arguments
  1 func:     function pointer.    void (*func)(char* warning_message)


# int onig_new(regex_t** reg, const UChar* pattern, const UChar* pattern_end,
            OnigOptionType option, OnigEncoding enc,
            const OnigSyntaxType* syntax, OnigErrorInfo* err_info)

  Create a regex object.

  normal return: ONIG_NORMAL

  arguments
  1 reg:         return regex object's address.
  2 pattern:     regex pattern string.
  3 pattern_end: terminate address of pattern. (pattern + pattern length)
  4 option:      compile time options.

      ONIG_OPTION_NONE               no option
      ONIG_OPTION_SINGLELINE         '^' -> '\A', '$' -> '\Z'
      ONIG_OPTION_DOTALL             '.' match with newline
      ONIG_OPTION_MULTILINE          same as ONIG_OPTION_DOTALL
      ONIG_OPTION_IGNORECASE         ambiguity match on
      ONIG_OPTION_EXTEND             extended pattern form
      ONIG_OPTION_FIND_LONGEST       find longest match
      ONIG_OPTION_FIND_NOT_EMPTY     ignore empty match
      ONIG_OPTION_NEGATE_SINGLELINE
            clear ONIG_OPTION_SINGLELINE which is enabled on
            ONIG_SYNTAX_POSIX_BASIC, ONIG_SYNTAX_POSIX_EXTENDED,
            ONIG_SYNTAX_PERL, ONIG_SYNTAX_PERL58, ONIG_SYNTAX_PERL58_NG,
            ONIG_SYNTAX_JAVA, ONIG_SYNTAX_PYTHON

      ONIG_OPTION_DONT_CAPTURE_GROUP only named group captured.
      ONIG_OPTION_CAPTURE_GROUP      named and no-named group captured.

      ONIG_OPTION_NEWLINE_CRLF
            Treat CR+LF as a newline too. (default: LF only)
            To use this option, you must enable the following line in regenc.h.

            /* #define USE_CRNL_AS_LINE_TERMINATOR */

  5 enc:        character encoding.

      ONIG_ENCODING_ASCII         ASCII
      ONIG_ENCODING_ISO_8859_1    ISO 8859-1
      ONIG_ENCODING_ISO_8859_2    ISO 8859-2
      ONIG_ENCODING_ISO_8859_3    ISO 8859-3
      ONIG_ENCODING_ISO_8859_4    ISO 8859-4
      ONIG_ENCODING_ISO_8859_5    ISO 8859-5
      ONIG_ENCODING_ISO_8859_6    ISO 8859-6
      ONIG_ENCODING_ISO_8859_7    ISO 8859-7
      ONIG_ENCODING_ISO_8859_8    ISO 8859-8
      ONIG_ENCODING_ISO_8859_9    ISO 8859-9
      ONIG_ENCODING_ISO_8859_10   ISO 8859-10
      ONIG_ENCODING_ISO_8859_11   ISO 8859-11
      ONIG_ENCODING_ISO_8859_13   ISO 8859-13
      ONIG_ENCODING_ISO_8859_14   ISO 8859-14
      ONIG_ENCODING_ISO_8859_15   ISO 8859-15
      ONIG_ENCODING_ISO_8859_16   ISO 8859-16
      ONIG_ENCODING_UTF_8         UTF-8
      ONIG_ENCODING_UTF_16BE      UTF-16BE
      ONIG_ENCODING_UTF_16LE      UTF-16LE
      ONIG_ENCODING_UTF_32BE      UTF-32BE
      ONIG_ENCODING_UTF_32LE      UTF-32LE
      ONIG_ENCODING_EUC_JP        EUC-JP
      ONIG_ENCODING_EUC_TW        EUC-TW
      ONIG_ENCODING_EUC_KR        EUC-KR
      ONIG_ENCODING_EUC_CN        EUC-CN
      ONIG_ENCODING_SHIFT_JIS     Shift_JIS
      ONIG_ENCODING_WINDOWS_31J   Windows-31J (CP932)
      ONIG_ENCODING_KOI8_R        KOI8-R
      ONIG_ENCODING_KOI8_U        KOI8-U
      ONIG_ENCODING_WINDOWS_1250  Windows-1250 (CP1250)
      ONIG_ENCODING_WINDOWS_1251  Windows-1251 (CP1251)
      ONIG_ENCODING_WINDOWS_1252  Windows-1252 (CP1252)
      ONIG_ENCODING_WINDOWS_1253  Windows-1253 (CP1253)
      ONIG_ENCODING_WINDOWS_1254  Windows-1254 (CP1254)
      ONIG_ENCODING_WINDOWS_1257  Windows-1257 (CP1257)
      ONIG_ENCODING_BIG5          Big5
      ONIG_ENCODING_GB18030       GB18030

      or any OnigEncodingType data address defined by user.

      The following encoding names can be also used for backward compatibility:

      ONIG_ENCODING_UTF8          UTF-8
      ONIG_ENCODING_UTF16_BE      UTF-16BE
      ONIG_ENCODING_UTF16_LE      UTF-16LE
      ONIG_ENCODING_UTF32_BE      UTF-32BE
      ONIG_ENCODING_UTF32_LE      UTF-32LE
      ONIG_ENCODING_SJIS          Shift_JIS
      ONIG_ENCODING_CP932         Windows-31J (CP932)
      ONIG_ENCODING_CP1250        Windows-1250 (CP1250)
      ONIG_ENCODING_CP1251        Windows-1251 (CP1251)
      ONIG_ENCODING_CP1252        Windows-1252 (CP1252)
      ONIG_ENCODING_CP1253        Windows-1253 (CP1253)
      ONIG_ENCODING_CP1254        Windows-1254 (CP1254)
      ONIG_ENCODING_CP1257        Windows-1257 (CP1257)


  6 syntax:     address of pattern syntax definition.

      ONIG_SYNTAX_ASIS              plain text
      ONIG_SYNTAX_POSIX_BASIC       POSIX Basic RE
      ONIG_SYNTAX_POSIX_EXTENDED    POSIX Extended RE
      ONIG_SYNTAX_EMACS             Emacs
      ONIG_SYNTAX_GREP              grep
      ONIG_SYNTAX_GNU_REGEX         GNU regex
      ONIG_SYNTAX_JAVA              Java (Sun java.util.regex)
      ONIG_SYNTAX_PERL58            Perl 5.8
      ONIG_SYNTAX_PERL58_NG         Perl 5.8 + named group
      ONIG_SYNTAX_PERL              Perl 5.10+
      ONIG_SYNTAX_PYTHON            Python
      ONIG_SYNTAX_RUBY              Ruby
      ONIG_SYNTAX_DEFAULT           default (== Ruby)
                                   onig_set_default_syntax()

      or any OnigSyntaxType data address defined by user.

  7 err_info: address for return optional error info.
              Use this value as 3rd argument of onig_error_code_to_str().



# int onig_new_without_alloc(regex_t* reg, const UChar* pattern,
            const UChar* pattern_end,
            OnigOptionType option, OnigEncoding enc,
            const OnigSyntaxType* syntax, OnigErrorInfo* err_info)

  Create a regex object.
  reg object area is not allocated in this function.

  normal return: ONIG_NORMAL



# int onig_new_deluxe(regex_t** reg, const UChar* pattern, const UChar* pattern_end,
                      OnigCompileInfo* ci, OnigErrorInfo* einfo)

  Create a regex object.
  This function is deluxe version of onig_new().

  normal return: ONIG_NORMAL

  arguments
  1 reg:         return address of regex object.
  2 pattern:     regex pattern string.
  3 pattern_end: terminate address of pattern. (pattern + pattern length)
  4 ci:          compile time info.

    ci->num_of_elements: number of elements in ci. (current version: 5)
    ci->pattern_enc:     pattern string character encoding.
    ci->target_enc:      target string character encoding.
    ci->syntax:          address of pattern syntax definition.
    ci->option:          compile time option.
    ci->case_fold_flag:  character matching case fold bit flag for
                         ONIG_OPTION_IGNORECASE mode.

       ONIGENC_CASE_FOLD_MIN:           minimum
       ONIGENC_CASE_FOLD_DEFAULT:       minimum
                                        onig_set_default_case_fold_flag()

  5 err_info:    address for return optional error info.
                 Use this value as 3rd argument of onig_error_code_to_str().


  Different character encoding combination is allowed for
  the following cases only.

    pattern_enc: ASCII, ISO_8859_1
    target_enc:  UTF_16BE, UTF_16LE, UTF_32BE, UTF_32LE

    pattern_enc: UTF_16BE/LE
    target_enc:  UTF_16LE/BE

    pattern_enc: UTF_32BE/LE
    target_enc:  UTF_32LE/BE


# void onig_free(regex_t* reg)

  Free memory used by regex object.

  arguments
  1 reg: regex object.


# void onig_free_body(regex_t* reg)

  Free memory used by regex object. (Except reg oneself.)

  arguments
  1 reg: regex object.


# OnigPosition onig_search(regex_t* reg, const UChar* str, const UChar* end,
                   const UChar* start, const UChar* range, OnigRegion* region,
                   OnigOptionType option)
# OnigPosition onig_search_gpos(regex_t* reg, const UChar* str, const UChar* end,
                   const UChar* global_pos,
                   const UChar* start, const UChar* range, OnigRegion* region,
                   OnigOptionType option)

  Search string and return search result and matching region.

  normal return: match position offset (i.e.  p - str >= 0)
  not found:     ONIG_MISMATCH (< 0)

  arguments
  1 reg:        regex object
  2 str:        target string
  3 end:        terminate address of target string
  4 global_pos: position of \G
                if not need, set same value as str.
  5 start:      search start address of target string
  6 range:      search terminate address of target string
    in forward search  (start <= searched string < range)
    in backward search (range <= searched string <= start)
  7 region:     address for return group match range info (NULL is allowed)
  8 option:     search time option

    ONIG_OPTION_NOTBOL        string head(str) isn't considered as begin of line
    ONIG_OPTION_NOTEOL        string end (end) isn't considered as end of line
    ONIG_OPTION_NOTBOS        string head(str) isn't considered as begin of string (\A)
    ONIG_OPTION_NOTEOS        string end (end) isn't considered as end of string (\z)


# OnigPosition onig_match(regex_t* reg, const UChar* str, const UChar* end,
                 const UChar* at, OnigRegion* region, OnigOptionType option)

  Match string and return result and matching region.

  normal return: match length  (>= 0)
  not match:     ONIG_MISMATCH ( < 0)

  arguments
  1 reg:    regex object
  2 str:    target string
  3 end:    terminate address of target string
  4 at:     match address of target string
  5 region: address for return group match range info (NULL is allowed)
  6 option: search time option

    ONIG_OPTION_NOTBOL       string head(str) isn't considered as begin of line
    ONIG_OPTION_NOTEOL       string end (end) isn't considered as end of line
    ONIG_OPTION_NOTBOS       string head(str) isn't considered as begin of string (\A)
    ONIG_OPTION_NOTEOS       string end (end) isn't considered as end of string (\z)


# OnigPosition onig_scan(regex_t* reg, const UChar* str, const UChar* end,
        OnigRegion* region, OnigOptionType option,
        int (*scan_callback)(OnigPosition, OnigPosition, OnigRegion*, void*),
        void* callback_arg)

  Scan string and callback with matching region.

  normal return: number of matching times
  error:         error code
  interruption:  return value of callback function (!= 0)

  arguments
  1 reg:    regex object
  2 str:    target string
  3 end:    terminate address of target string
  4 region: address for return group match range info (NULL is allowed)
  5 option: search time option
  6 scan_callback: callback function (defined by user)
  7 callback_arg:  optional argument passed to callback


# OnigRegion* onig_region_new(void)

  Create a region.


# void onig_region_free(OnigRegion* region, int free_self)

  Free memory used by region.

  arguments
  1 region:    target region
  2 free_self: [1: free all, 0: free memory used in region but not self]


# void onig_region_copy(OnigRegion* to, const OnigRegion* from)

  Copy contents of region.

  arguments
  1 to:   target region
  2 from: source region


# void onig_region_clear(OnigRegion* region)

  Clear contents of region.

  arguments
  1 region: target region


# int onig_region_resize(OnigRegion* region, int n)

  Resize group range area of region.

  normal return: ONIG_NORMAL

  arguments
  1 region: target region
  2 n:      new size


# int onig_name_to_group_numbers(regex_t* reg, const UChar* name, const UChar* name_end,
                                  int** num_list)

  Return the group number list of the name.
  Named subexp is defined by (?<name>....).

  normal return:  number of groups for the name.
                  (ex. /(?<x>..)(?<x>..)/  ==>  2)
  name not found: -1

  arguments
  1 reg:       regex object.
  2 name:      group name.
  3 name_end:  terminate address of group name.
  4 num_list:  return list of group number.


# int onig_name_to_backref_number(regex_t* reg, const UChar* name, const UChar* name_end,
                                  const OnigRegion *region)

  Return the group number corresponding to the named backref (\k<name>).
  If two or more regions for the groups of the name are effective,
  the greatest number in it is obtained.

  normal return: group number.

  arguments
  1 reg:      regex object.
  2 name:     group name.
  3 name_end: terminate address of group name.
  4 region:   search/match result region.


# int onig_foreach_name(regex_t* reg,
                        int (*func)(const UChar*, const UChar*, int,int*,regex_t*,void*),
                        void* arg)

  Iterate function call for all names.

  normal return: 0
  error:         func's return value.

  arguments
  1 reg:     regex object.
  2 func:    callback function.
             func(name, name_end, <number of groups>, <group number's list>,
                  reg, arg);
             if func does not return 0, then iteration is stopped.
  3 arg:     argument for func.


# int onig_number_of_names(const regex_t* reg)

  Return the number of names defined in the pattern.
  Multiple definitions of one name is counted as one.

  arguments
  1 reg:     regex object.


# OnigEncoding     onig_get_encoding(const regex_t* reg)
# OnigOptionType   onig_get_options(const regex_t* reg)
# OnigCaseFoldType onig_get_case_fold_flag(const regex_t* reg)
# const OnigSyntaxType* onig_get_syntax(const regex_t* reg)

  Return a value of the regex object.

  arguments
  1 reg:     regex object.


# int onig_number_of_captures(const regex_t* reg)

  Return the number of capture group in the pattern.

  arguments
  1 reg:     regex object.


# int onig_number_of_capture_histories(const regex_t* reg)

  Return the number of capture history defined in the pattern.

  You can't use capture history if ONIG_SYN_OP2_ATMARK_CAPTURE_HISTORY
  is disabled in the pattern syntax.(disabled in the default syntax)

  arguments
  1 reg:     regex object.



# OnigCaptureTreeNode* onig_get_capture_tree(OnigRegion* region)

  Return the root node of capture history data tree.

  This value is undefined if matching has faild.

  arguments
  1 region: matching result.


# int onig_capture_tree_traverse(OnigRegion* region, int at,
                  int(*func)(int,OnigPosition,OnigPosition,int,int,void*),
                  void* arg)

 Traverse and callback in capture history data tree.

  normal return: 0
  error:         callback func's return value.

  arguments
  1 region:  match region data.
  2 at:      callback position.

    ONIG_TRAVERSE_CALLBACK_AT_FIRST: callback first, then traverse children.
    ONIG_TRAVERSE_CALLBACK_AT_LAST:  traverse children first, then callback.
    ONIG_TRAVERSE_CALLBACK_AT_BOTH:  callback first, then traverse children,
                                     and at last callback again.

  3 func:    callback function.
             if func does not return 0, then traverse is stopped.

             int func(int group, OnigPosition beg, OnigPosition end,
                      int level, int at, void* arg)

               group: group number
               beg:   capture start position
               end:   capture end position
               level: nest level (from 0)
               at:    callback position
                      ONIG_TRAVERSE_CALLBACK_AT_FIRST
                      ONIG_TRAVERSE_CALLBACK_AT_LAST
               arg:   optional callback argument

  4 arg;     optional callback argument.


# int onig_noname_group_capture_is_active(const regex_t* reg)

  Return noname group capture activity.

  active:   1
  inactive: 0

  arguments
  1 reg:     regex object.

  if option ONIG_OPTION_DONT_CAPTURE_GROUP == ON
    --> inactive

  if the regex pattern have named group
     and syntax ONIG_SYN_CAPTURE_ONLY_NAMED_GROUP == ON
     and option ONIG_OPTION_CAPTURE_GROUP == OFF
    --> inactive

  else --> active


# UChar* onigenc_get_prev_char_head(OnigEncoding enc, const UChar* start,
                                    const UChar* s, const UChar* end)

  Return previous character head address.

  arguments
  1 enc:   character encoding
  2 start: string address
  3 s:     target address of string
  4 end:   end of string


# UChar* onigenc_get_left_adjust_char_head(OnigEncoding enc,
                           const UChar* start, const UChar* s, const UChar* end)

  Return left-adjusted head address of a character.

  arguments
  1 enc:   character encoding
  2 start: string address
  3 s:     target address of string
  4 end:   end of string


# UChar* onigenc_get_right_adjust_char_head(OnigEncoding enc,
                    const UChar* start, const UChar* s, const UChar* end)

  Return right-adjusted head address of a character.

  arguments
  1 enc:   character encoding
  2 start: string address
  3 s:     target address of string
  4 end:   end of string


# int onigenc_strlen(OnigEncoding enc, const UChar* s, const UChar* end)
# int onigenc_strlen_null(OnigEncoding enc, const UChar* s)

  Return number of characters in the string.


# int onigenc_str_bytelen_null(OnigEncoding enc, const UChar* s)

  Return number of bytes in the string.


# int onig_set_default_syntax(const OnigSyntaxType* syntax)

  Set default syntax.

  arguments
  1 syntax: address of pattern syntax definition.


# void onig_copy_syntax(OnigSyntaxType* to, const OnigSyntaxType* from)

  Copy syntax.

  arguments
  1 to:   destination address.
  2 from: source address.


# unsigned int onig_get_syntax_op(const OnigSyntaxType* syntax)
# unsigned int onig_get_syntax_op2(const OnigSyntaxType* syntax)
# unsigned int onig_get_syntax_behavior(const OnigSyntaxType* syntax)
# OnigOptionType onig_get_syntax_options(const OnigSyntaxType* syntax)

# void onig_set_syntax_op(OnigSyntaxType* syntax, unsigned int op)
# void onig_set_syntax_op2(OnigSyntaxType* syntax, unsigned int op2)
# void onig_set_syntax_behavior(OnigSyntaxType* syntax, unsigned int behavior)
# void onig_set_syntax_options(OnigSyntaxType* syntax, OnigOptionType options)

 Get/Set elements of the syntax.

  arguments
  1 syntax:  syntax
  2 op, op2, behavior, options: value of element.


# void onig_copy_encoding(OnigEncodingType *to, OnigEncoding from)

  Copy encoding.

  arguments
  1 to:   destination address.
  2 from: source address.


# int onig_set_meta_char(OnigSyntaxType* syntax, unsigned int what,
                         OnigCodePoint code)

  Set a variable meta character to the code point value.
  Except for an escape character, this meta characters specification
  is not work, if ONIG_SYN_OP_VARIABLE_META_CHARACTERS is not effective
  by the syntax. (Build-in syntaxes are not effective.)

  normal return: ONIG_NORMAL

  arguments
  1 syntax: target syntax
  2 what:   specifies which meta character it is.

          ONIG_META_CHAR_ESCAPE
          ONIG_META_CHAR_ANYCHAR
          ONIG_META_CHAR_ANYTIME
          ONIG_META_CHAR_ZERO_OR_ONE_TIME
          ONIG_META_CHAR_ONE_OR_MORE_TIME
          ONIG_META_CHAR_ANYCHAR_ANYTIME

  3 code: meta character or ONIG_INEFFECTIVE_META_CHAR.


# OnigCaseFoldType onig_get_default_case_fold_flag(void)

  Get default case fold flag.


# int onig_set_default_case_fold_flag(OnigCaseFoldType case_fold_flag)

  Set default case fold flag.

  1 case_fold_flag: case fold flag


# unsigned int onig_get_match_stack_limit_size(void)

  Return the maximum number of stack size.
  (default: 0 == unlimited)


# int onig_set_match_stack_limit_size(unsigned int size)

  Set the maximum number of stack size.
  (size = 0: unlimited)

  normal return: ONIG_NORMAL


# unsigned int onig_get_parse_depth_limit(void)

  Return the maximum depth of parser recursion.
  (default: DEFAULT_PARSE_DEPTH_LIMIT defined in regint.h. Currently 4096.)


# int onig_set_parse_depth_limit(unsigned int depth)

  Set the maximum depth of parser recursion.
  (depth = 0: Set to the default value defined in regint.h.)

  normal return: ONIG_NORMAL


# int onig_end(void)

  The use of this library is finished.

  normal return: ONIG_NORMAL

  It is not allowed to use regex objects which created
  before onig_end() call.


# const char* onig_version(void)

  Return version string.  (ex. "5.0.3")

// END
