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Working onigmo wrapper, but onigmo doesn't support anchored regexes
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104
src/onigmo.cr
104
src/onigmo.cr
@ -1,88 +1,34 @@
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@[Link("onigmo")]
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@[Link(ldflags: "#{__DIR__}/onigmo/onigwrap.o")]
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lib Onigmo
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type OnigOptionType = UInt32
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type OnigCaseFoldType = UInt32
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type OnigDistance = LibC::SizeT
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type Regex = Pointer(Void)
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type Region = Pointer(Void)
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struct OnigRegex
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p : LibC::UChar*
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used : UInt32
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alloc : UInt32
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fun create = onigwrap_create(pattern : LibC::Char*, len : UInt32,
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ignoreCase : Int32,
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multiline : Int32,
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dotall : Int32,
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anchored : Int32) : Regex
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fun free = onigwrap_free(re : Regex)
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fun region_free = onigwrap_region_free(region : Region)
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num_mem : Int32
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num_repeat : Int32
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num_null_check : Int32
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num_comb_exp_check : Int32
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num_call : Int32
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capture_history : UInt32
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bt_mem_start : UInt32
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bt_mem_end : UInt32
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stack_pop_level : Int32
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repeat_range_alloc : Int32
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options : OnigOptionType
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syntax : OnigSyntaxType*
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name_table : Void*
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case_fold_flag : OnigCaseFoldType
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optimize : Int32
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threshold_len : Int32
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anchor : Int32
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anchor_dmin : OnigDistance
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anchor_dmax : OnigDistance
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sub_anchor : Int32
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exact : LibC::UChar*
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exact_end : LibC::UChar*
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map : LibC::UChar*
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int_map : Int32*
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int_map_backward : Int32*
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dmin : OnigDistance
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dmax : OnigDistance
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chain : OnigRegex*
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fun search = onigwrap_search(re : Regex, str : LibC::Char*, offset : UInt32, length : UInt32) : Region
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fun num_regs = onigwrap_num_regs(region : Region) : Int32
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fun pos = onigwrap_pos(region : Region, index : Int32) : Int32
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fun len = onigwrap_len(region : Region, index : Int32) : Int32
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end
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type OnigRegexType = OnigRegex*
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type OnigCodePoint = UInt32
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type OnigUChar = LibC::UChar
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type OnigEncoding = Void*
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pattern = "a"
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str = "# foobar"
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struct OnigMetaCharTableType
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esc : OnigCodePoint
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anychar : OnigCodePoint
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anytime : OnigCodePoint
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zero_or_one_time : OnigCodePoint
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one_or_one_time : OnigCodePoint
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anychar_anytime : OnigCodePoint
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re = Onigmo.create(pattern, pattern.size, false, true, false, false)
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region = Onigmo.search(re, str.to_unsafe, 0, str.bytesize)
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num_regs = Onigmo.num_regs(region)
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(0...num_regs).each do |i|
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pos = Onigmo.pos(region, i)
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len = Onigmo.len(region, i)
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puts "match #{i}: #{str[pos, len]}"
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end
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struct OnigSyntaxType
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op : UInt32
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op2 : UInt32
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behavior : UInt32
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options : OnigOptionType
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meta_char_table : OnigMetaCharTableType
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end
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struct OnigErrorInfo
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enc : OnigEncoding
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par : OnigUChar*
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par_end : OnigUChar*
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end
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ONIG_OPTION_NONE = 0u32
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ONIG_OPTION_DEFAULT = ONIG_OPTION_NONE
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fun new = onig_new(OnigRegex*, OnigUChar*, OnigUChar*, OnigOptionType, OnigEncoding, OnigSyntaxType*, OnigErrorInfo*)
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end
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pattern = "a(.*)b|[e-f]+"
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str = "zzzzaffffffffb"
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einfo = Onigmo::OnigErrorInfo.new
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Onigmo.new(out reg,
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pattern.to_unsafe,
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pattern.to_unsafe + pattern.size,
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Onigmo::ONIG_OPTION_DEFAULT,
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0,
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Onigmo::ONIG_SYNTAX_DEFAULT, pointerof(einfo))
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Onigmo.region_free(region)
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Onigmo.free(re)
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94
src/onigmo/onigwrap.c
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94
src/onigmo/onigwrap.c
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@ -0,0 +1,94 @@
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#include "onigmo.h"
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regex_t *onigwrap_create(char *pattern, int len, int ignoreCase, int multiline, int dotall, int anchored )
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{
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regex_t *reg;
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OnigErrorInfo einfo;
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OnigOptionType onigOptions = ONIG_OPTION_DEFAULT;
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if (ignoreCase == 1)
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onigOptions |= ONIG_OPTION_IGNORECASE;
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if (multiline == 1)
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onigOptions |= ONIG_OPTION_NEGATE_SINGLELINE;
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if (dotall == 1)
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onigOptions |= ONIG_OPTION_DOTALL;
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OnigUChar *stringStart = (OnigUChar*) pattern;
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OnigUChar *stringEnd = (OnigUChar*) pattern + len;
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int res = onig_new(®, stringStart, stringEnd, onigOptions, ONIG_ENCODING_UTF8, ONIG_SYNTAX_PYTHON, &einfo);
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return reg;
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}
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void onigwrap_region_free(OnigRegion *region)
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{
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onig_region_free(region, 1);
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}
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void onigwrap_free(regex_t *reg)
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{
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onig_free(reg);
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}
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int onigwrap_index_in(regex_t *reg, char *charPtr, int offset, int length)
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{
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OnigUChar *stringStart = (OnigUChar*) charPtr;
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OnigUChar *stringEnd = (OnigUChar*) (charPtr + length);
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OnigUChar *stringOffset = (OnigUChar*) (charPtr + offset);
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OnigUChar *stringRange = (OnigUChar*) stringEnd;
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OnigRegion *region = onig_region_new();
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int result = onig_search(reg, stringStart, stringEnd, stringOffset, stringRange, region, ONIG_OPTION_NONE);
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onig_region_free(region, 1);
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if (result >= 0)
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return result >> 1;
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if (result == ONIG_MISMATCH)
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return -1;
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return -2;
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}
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OnigRegion *onigwrap_search(regex_t *reg, char *charPtr, int offset, int length)
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{
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OnigUChar *stringStart = (OnigUChar*) charPtr;
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OnigUChar *stringEnd = (OnigUChar*) (charPtr + length);
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OnigUChar *stringOffset = (OnigUChar*) (charPtr + offset);
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OnigUChar *stringRange = (OnigUChar*) stringEnd;
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OnigRegion *region = onig_region_new();
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int result = onig_search(reg, stringStart, stringEnd, stringOffset, stringRange, region, ONIG_OPTION_NONE);
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return region;
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}
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int onigwrap_num_regs(OnigRegion *region)
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{
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return region->num_regs;
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}
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int onigwrap_pos(OnigRegion *region, int nth)
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{
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if (nth < region->num_regs)
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{
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int result = region->beg[nth];
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if (result < 0)
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return -1;
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return result;
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}
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return -1;
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}
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int onigwrap_len(OnigRegion *region, int nth)
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{
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if (nth < region->num_regs)
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{
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int result = region->end[nth] - region->beg[nth];
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return result;
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}
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return -1;
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}
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32
src/onigmo/onigwrap.h
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32
src/onigmo/onigwrap.h
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@ -0,0 +1,32 @@
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#include "oniguruma.h"
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#if defined(_WIN32)
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#define ONIGWRAP_EXTERN extern __declspec(dllexport)
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#else
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#define ONIGWRAP_EXTERN extern
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#endif
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ONIGWRAP_EXTERN
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regex_t *onigwrap_create(char *pattern, int len, int ignoreCase, int multiline);
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ONIGWRAP_EXTERN
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void onigwrap_region_free(OnigRegion *region);
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ONIGWRAP_EXTERN
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void onigwrap_free(regex_t *reg);
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ONIGWRAP_EXTERN
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int onigwrap_index_in(regex_t *reg, char *charPtr, int offset, int length);
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ONIGWRAP_EXTERN
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OnigRegion *onigwrap_search(regex_t *reg, char *charPtr, int offset, int length);
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ONIGWRAP_EXTERN
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int onigwrap_num_regs(OnigRegion *region);
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ONIGWRAP_EXTERN
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int onigwrap_pos(OnigRegion *region, int nth);
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ONIGWRAP_EXTERN
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int onigwrap_len(OnigRegion *region, int nth);
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