GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
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<h2><span class="refentrytitle">xmlregexp</span></h2>
<p>xmlregexp - regular expressions handling</p>
<p>basic API for libxml regular expressions handling used for XML Schemas and validation. </p>
<p>Author(s): Daniel Veillard </p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">typedef struct _xmlExpCtxt <a href="#xmlExpCtxt">xmlExpCtxt</a>;
typedef <a href="libxml2-xmlregexp.html#xmlExpCtxt">xmlExpCtxt</a> * <a href="#xmlExpCtxtPtr">xmlExpCtxtPtr</a>;
typedef struct _xmlExpNode <a href="#xmlExpNode">xmlExpNode</a>;
typedef <a href="libxml2-xmlregexp.html#xmlExpNode">xmlExpNode</a> * <a href="#xmlExpNodePtr">xmlExpNodePtr</a>;
typedef enum <a href="#xmlExpNodeType">xmlExpNodeType</a>;
typedef struct _xmlRegExecCtxt <a href="#xmlRegExecCtxt">xmlRegExecCtxt</a>;
typedef <a href="libxml2-xmlregexp.html#xmlRegExecCtxt">xmlRegExecCtxt</a> * <a href="#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a>;
typedef struct _xmlRegexp <a href="#xmlRegexp">xmlRegexp</a>;
typedef <a href="libxml2-xmlregexp.html#xmlRegexp">xmlRegexp</a> * <a href="#xmlRegexpPtr">xmlRegexpPtr</a>;
int	<a href="#xmlExpCtxtNbCons">xmlExpCtxtNbCons</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt);
int	<a href="#xmlExpCtxtNbNodes">xmlExpCtxtNbNodes</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt);
void	<a href="#xmlExpDump">xmlExpDump</a>			(<a href="libxml2-tree.html#xmlBufferPtr">xmlBufferPtr</a> buf, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr);
<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	<a href="#xmlExpExpDerive">xmlExpExpDerive</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub);
void	<a href="#xmlExpFree">xmlExpFree</a>			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp);
void	<a href="#xmlExpFreeCtxt">xmlExpFreeCtxt</a>			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt);
int	<a href="#xmlExpGetLanguage">xmlExpGetLanguage</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** langList, <br>					 int len);
int	<a href="#xmlExpGetStart">xmlExpGetStart</a>			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** tokList, <br>					 int len);
int	<a href="#xmlExpIsNillable">xmlExpIsNillable</a>		(<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp);
int	<a href="#xmlExpMaxToken">xmlExpMaxToken</a>			(<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr);
<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	<a href="#xmlExpNewAtom">xmlExpNewAtom</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br>					 int len);
<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a>	<a href="#xmlExpNewCtxt">xmlExpNewCtxt</a>		(int maxNodes, <br>					 <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict);
<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	<a href="#xmlExpNewOr">xmlExpNewOr</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right);
<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	<a href="#xmlExpNewRange">xmlExpNewRange</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> subset, <br>					 int min, <br>					 int max);
<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	<a href="#xmlExpNewSeq">xmlExpNewSeq</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right);
<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	<a href="#xmlExpParse">xmlExpParse</a>		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 const char * expr);
void	<a href="#xmlExpRef">xmlExpRef</a>			(<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp);
<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	<a href="#xmlExpStringDerive">xmlExpStringDerive</a>	(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br>					 int len);
int	<a href="#xmlExpSubsume">xmlExpSubsume</a>			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub);
typedef void <a href="#xmlRegExecCallbacks">xmlRegExecCallbacks</a>		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * token, <br>					 void * transdata, <br>					 void * inputdata);
int	<a href="#xmlRegExecErrInfo">xmlRegExecErrInfo</a>		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** string, <br>					 int * nbval, <br>					 int * nbneg, <br>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br>					 int * terminal);
int	<a href="#xmlRegExecNextValues">xmlRegExecNextValues</a>		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 int * nbval, <br>					 int * nbneg, <br>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br>					 int * terminal);
int	<a href="#xmlRegExecPushString">xmlRegExecPushString</a>		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br>					 void * data);
int	<a href="#xmlRegExecPushString2">xmlRegExecPushString2</a>		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value2, <br>					 void * data);
void	<a href="#xmlRegFreeExecCtxt">xmlRegFreeExecCtxt</a>		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec);
void	<a href="#xmlRegFreeRegexp">xmlRegFreeRegexp</a>		(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp);
<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a>	<a href="#xmlRegNewExecCtxt">xmlRegNewExecCtxt</a>	(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br>						 <a href="libxml2-xmlregexp.html#xmlRegExecCallbacks">xmlRegExecCallbacks</a> callback, <br>						 void * data);
<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a>	<a href="#xmlRegexpCompile">xmlRegexpCompile</a>	(const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * regexp);
int	<a href="#xmlRegexpExec">xmlRegexpExec</a>			(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * content);
int	<a href="#xmlRegexpIsDeterminist">xmlRegexpIsDeterminist</a>		(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp);
void	<a href="#xmlRegexpPrint">xmlRegexpPrint</a>			(FILE * output, <br>					 <a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp);
</pre>
</div>
<div class="refsect1" lang="en"><h2>Description</h2></div>
<div class="refsect1" lang="en">
<h2>Details</h2>
<div class="refsect2" lang="en">
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpCtxt">Structure </a>xmlExpCtxt</h3>
<pre class="programlisting">struct _xmlExpCtxt {
The content of this structure is not made public by the API.
} xmlExpCtxt;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpCtxtPtr">Typedef </a>xmlExpCtxtPtr</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpCtxt">xmlExpCtxt</a> * xmlExpCtxtPtr;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNode">Structure </a>xmlExpNode</h3>
<pre class="programlisting">struct _xmlExpNode {
The content of this structure is not made public by the API.
} xmlExpNode;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNodePtr">Typedef </a>xmlExpNodePtr</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNode">xmlExpNode</a> * xmlExpNodePtr;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNodeType">Enum </a>xmlExpNodeType</h3>
<pre class="programlisting">enum <a href="#xmlExpNodeType">xmlExpNodeType</a> {
    <a name="XML_EXP_EMPTY">XML_EXP_EMPTY</a> = 0
    <a name="XML_EXP_FORBID">XML_EXP_FORBID</a> = 1
    <a name="XML_EXP_ATOM">XML_EXP_ATOM</a> = 2
    <a name="XML_EXP_SEQ">XML_EXP_SEQ</a> = 3
    <a name="XML_EXP_OR">XML_EXP_OR</a> = 4
    <a name="XML_EXP_COUNT">XML_EXP_COUNT</a> = 5
};
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegExecCtxt">Structure </a>xmlRegExecCtxt</h3>
<pre class="programlisting">struct _xmlRegExecCtxt {
The content of this structure is not made public by the API.
} xmlRegExecCtxt;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegExecCtxtPtr">Typedef </a>xmlRegExecCtxtPtr</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegExecCtxt">xmlRegExecCtxt</a> * xmlRegExecCtxtPtr;
</pre>
<p>A libxml progressive regular expression evaluation context</p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegexp">Structure </a>xmlRegexp</h3>
<pre class="programlisting">struct _xmlRegexp {
The content of this structure is not made public by the API.
} xmlRegexp;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegexpPtr">Typedef </a>xmlRegexpPtr</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegexp">xmlRegexp</a> * xmlRegexpPtr;
</pre>
<p>A libxml regular expression, they can actually be far more complex thank the POSIX regex expressions.</p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegExecCallbacks"></a>Function type xmlRegExecCallbacks</h3>
<pre class="programlisting">void	xmlRegExecCallbacks		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * token, <br>					 void * transdata, <br>					 void * inputdata)<br>
</pre>
<p>Callback function when doing a transition in the automata</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>exec</tt></i>:</span></td>
<td>the regular expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>token</tt></i>:</span></td>
<td>the current token string</td>
</tr>
<tr>
<td><span class="term"><i><tt>transdata</tt></i>:</span></td>
<td>transition data</td>
</tr>
<tr>
<td><span class="term"><i><tt>inputdata</tt></i>:</span></td>
<td>input data</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="emptyExp">Variable </a>emptyExp</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> emptyExp;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="forbiddenExp">Variable </a>forbiddenExp</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> forbiddenExp;
</pre>
<p></p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpCtxtNbCons"></a>xmlExpCtxtNbCons ()</h3>
<pre class="programlisting">int	xmlExpCtxtNbCons		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt)<br>
</pre>
<p>Debugging facility provides the number of allocated nodes over lifetime</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>an expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the number of nodes ever allocated or -1 in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpCtxtNbNodes"></a>xmlExpCtxtNbNodes ()</h3>
<pre class="programlisting">int	xmlExpCtxtNbNodes		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt)<br>
</pre>
<p>Debugging facility provides the number of allocated nodes at a that point</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>an expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the number of nodes in use or -1 in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpDump"></a>xmlExpDump ()</h3>
<pre class="programlisting">void	xmlExpDump			(<a href="libxml2-tree.html#xmlBufferPtr">xmlBufferPtr</a> buf, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr)<br>
</pre>
<p>Serialize the expression as compiled to the buffer</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>buf</tt></i>:</span></td>
<td>a buffer to receive the output</td>
</tr>
<tr>
<td><span class="term"><i><tt>expr</tt></i>:</span></td>
<td>the compiled expression</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpExpDerive"></a>xmlExpExpDerive ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	xmlExpExpDerive		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub)<br>
</pre>
<p>Evaluates the expression resulting from @exp consuming a sub expression @sub Based on algebraic derivation and sometimes direct Brzozowski derivation it usually takes less than linear time and can handle expressions generating infinite languages.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expressions context</td>
</tr>
<tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the englobing expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>sub</tt></i>:</span></td>
<td>the subexpression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the resulting expression or NULL in case of internal error, the result must be freed</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpFree"></a>xmlExpFree ()</h3>
<pre class="programlisting">void	xmlExpFree			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp)<br>
</pre>
<p>Dereference the expression</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the expression</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpFreeCtxt"></a>xmlExpFreeCtxt ()</h3>
<pre class="programlisting">void	xmlExpFreeCtxt			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt)<br>
</pre>
<p>Free an expression context</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody><tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>an expression context</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpGetLanguage"></a>xmlExpGetLanguage ()</h3>
<pre class="programlisting">int	xmlExpGetLanguage		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** langList, <br>					 int len)<br>
</pre>
<p>Find all the strings used in @exp and store them in @list</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>langList</tt></i>:</span></td>
<td>where to store the tokens</td>
</tr>
<tr>
<td><span class="term"><i><tt>len</tt></i>:</span></td>
<td>the allocated length of @list</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the number of unique strings found, -1 in case of errors and -2 if there is more than @len strings</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpGetStart"></a>xmlExpGetStart ()</h3>
<pre class="programlisting">int	xmlExpGetStart			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** tokList, <br>					 int len)<br>
</pre>
<p>Find all the strings that appears at the start of the languages accepted by @exp and store them in @list. E.g. for (a, b) | c it will return the list [a, c]</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>tokList</tt></i>:</span></td>
<td>where to store the tokens</td>
</tr>
<tr>
<td><span class="term"><i><tt>len</tt></i>:</span></td>
<td>the allocated length of @list</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the number of unique strings found, -1 in case of errors and -2 if there is more than @len strings</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpIsNillable"></a>xmlExpIsNillable ()</h3>
<pre class="programlisting">int	xmlExpIsNillable		(<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp)<br>
</pre>
<p>Finds if the expression is nillable, i.e. if it accepts the empty sequence</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>1 if nillable, 0 if not and -1 in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpMaxToken"></a>xmlExpMaxToken ()</h3>
<pre class="programlisting">int	xmlExpMaxToken			(<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> expr)<br>
</pre>
<p>Indicate the maximum number of input a expression can accept</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>expr</tt></i>:</span></td>
<td>a compiled expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the maximum length or -1 in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNewAtom"></a>xmlExpNewAtom ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	xmlExpNewAtom		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br>					 int len)<br>
</pre>
<p>Get the atom associated to this name from that context</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>name</tt></i>:</span></td>
<td>the atom name</td>
</tr>
<tr>
<td><span class="term"><i><tt>len</tt></i>:</span></td>
<td>the atom name length in byte (or -1);</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the node or NULL in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNewCtxt"></a>xmlExpNewCtxt ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a>	xmlExpNewCtxt		(int maxNodes, <br>					 <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict)<br>
</pre>
<p>Creates a new context for manipulating expressions</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>maxNodes</tt></i>:</span></td>
<td>the maximum number of nodes</td>
</tr>
<tr>
<td><span class="term"><i><tt>dict</tt></i>:</span></td>
<td>optional dictionary to use internally</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the context or NULL in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNewOr"></a>xmlExpNewOr ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	xmlExpNewOr		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right)<br>
</pre>
<p>Get the atom associated to the choice @left | @right Note that @left and @right are consumed in the operation, to keep an handle on them use xmlExpRef() and use xmlExpFree() to release them, this is true even in case of failure (unless ctxt == NULL).</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>left</tt></i>:</span></td>
<td>left expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>right</tt></i>:</span></td>
<td>right expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the node or NULL in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNewRange"></a>xmlExpNewRange ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	xmlExpNewRange		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> subset, <br>					 int min, <br>					 int max)<br>
</pre>
<p>Get the atom associated to the range (@subset){@min, @max} Note that @subset is consumed in the operation, to keep an handle on it use xmlExpRef() and use xmlExpFree() to release it, this is true even in case of failure (unless ctxt == NULL).</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>subset</tt></i>:</span></td>
<td>the expression to be repeated</td>
</tr>
<tr>
<td><span class="term"><i><tt>min</tt></i>:</span></td>
<td>the lower bound for the repetition</td>
</tr>
<tr>
<td><span class="term"><i><tt>max</tt></i>:</span></td>
<td>the upper bound for the repetition, -1 means infinite</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the node or NULL in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpNewSeq"></a>xmlExpNewSeq ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	xmlExpNewSeq		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> left, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> right)<br>
</pre>
<p>Get the atom associated to the sequence @left , @right Note that @left and @right are consumed in the operation, to keep an handle on them use xmlExpRef() and use xmlExpFree() to release them, this is true even in case of failure (unless ctxt == NULL).</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>left</tt></i>:</span></td>
<td>left expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>right</tt></i>:</span></td>
<td>right expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the node or NULL in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpParse"></a>xmlExpParse ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	xmlExpParse		(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 const char * expr)<br>
</pre>
<p>Minimal parser for regexps, it understand the following constructs - string terminals - choice operator | - sequence operator , - subexpressions (...) - usual cardinality operators + * and ? - finite sequences { min, max } - infinite sequences { min, * } There is minimal checkings made especially no checking on strings values</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expressions context</td>
</tr>
<tr>
<td><span class="term"><i><tt>expr</tt></i>:</span></td>
<td>the 0 terminated string</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>a new expression or NULL in case of failure</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpRef"></a>xmlExpRef ()</h3>
<pre class="programlisting">void	xmlExpRef			(<a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp)<br>
</pre>
<p>Increase the <a href="libxml2-SAX.html#reference">reference</a> count of the expression</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody><tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the expression</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpStringDerive"></a>xmlExpStringDerive ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a>	xmlExpStringDerive	(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * str, <br>					 int len)<br>
</pre>
<p>Do one step of Brzozowski derivation of the expression @exp with respect to the input string</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expression context</td>
</tr>
<tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>str</tt></i>:</span></td>
<td>the string</td>
</tr>
<tr>
<td><span class="term"><i><tt>len</tt></i>:</span></td>
<td>the string len in bytes if available</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the resulting expression or NULL in case of internal error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlExpSubsume"></a>xmlExpSubsume ()</h3>
<pre class="programlisting">int	xmlExpSubsume			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp, <br>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> sub)<br>
</pre>
<p>Check whether @exp accepts all the languages accepted by @sub the input being a subexpression.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the expressions context</td>
</tr>
<tr>
<td><span class="term"><i><tt>exp</tt></i>:</span></td>
<td>the englobing expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>sub</tt></i>:</span></td>
<td>the subexpression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>1 if true 0 if false and -1 in case of failure.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegExecErrInfo"></a>xmlRegExecErrInfo ()</h3>
<pre class="programlisting">int	xmlRegExecErrInfo		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** string, <br>					 int * nbval, <br>					 int * nbneg, <br>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br>					 int * terminal)<br>
</pre>
<p>Extract error information from the regexp execution, the parameter @string will be updated with the value pushed and not accepted, the parameter @values must point to an array of @nbval string pointers on return nbval will contain the number of possible strings in that state and the @values array will be updated with them. The string values</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>exec</tt></i>:</span></td>
<td>a regexp execution context generating an error</td>
</tr>
<tr>
<td><span class="term"><i><tt>string</tt></i>:</span></td>
<td>return value for the error string</td>
</tr>
<tr>
<td><span class="term"><i><tt>nbval</tt></i>:</span></td>
<td>pointer to the number of accepted values IN/OUT</td>
</tr>
<tr>
<td><span class="term"><i><tt>nbneg</tt></i>:</span></td>
<td>return number of negative transitions</td>
</tr>
<tr>
<td><span class="term"><i><tt>values</tt></i>:</span></td>
<td>pointer to the array of acceptable values</td>
</tr>
<tr>
<td><span class="term"><i><tt>terminal</tt></i>:</span></td>
<td>return value if this was a terminal state</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>will be freed with the @exec context and don't need to be deallocated. Returns: 0 in case of success or -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegExecNextValues"></a>xmlRegExecNextValues ()</h3>
<pre class="programlisting">int	xmlRegExecNextValues		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 int * nbval, <br>					 int * nbneg, <br>					 <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> ** values, <br>					 int * terminal)<br>
</pre>
<p>Extract information from the regexp execution, the parameter @values must point to an array of @nbval string pointers on return nbval will contain the number of possible strings in that state and the @values array will be updated with them. The string values</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>exec</tt></i>:</span></td>
<td>a regexp execution context</td>
</tr>
<tr>
<td><span class="term"><i><tt>nbval</tt></i>:</span></td>
<td>pointer to the number of accepted values IN/OUT</td>
</tr>
<tr>
<td><span class="term"><i><tt>nbneg</tt></i>:</span></td>
<td>return number of negative transitions</td>
</tr>
<tr>
<td><span class="term"><i><tt>values</tt></i>:</span></td>
<td>pointer to the array of acceptable values</td>
</tr>
<tr>
<td><span class="term"><i><tt>terminal</tt></i>:</span></td>
<td>return value if this was a terminal state</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>will be freed with the @exec context and don't need to be deallocated. Returns: 0 in case of success or -1 in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegExecPushString"></a>xmlRegExecPushString ()</h3>
<pre class="programlisting">int	xmlRegExecPushString		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br>					 void * data)<br>
</pre>
<p>Push one input token in the execution context</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>exec</tt></i>:</span></td>
<td>a regexp execution context or NULL to indicate the end</td>
</tr>
<tr>
<td><span class="term"><i><tt>value</tt></i>:</span></td>
<td>a string token input</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>data associated to the token to reuse in callbacks</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>1 if the regexp reached a final state, 0 if non-final, and a negative value in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegExecPushString2"></a>xmlRegExecPushString2 ()</h3>
<pre class="programlisting">int	xmlRegExecPushString2		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * value2, <br>					 void * data)<br>
</pre>
<p>Push one input token in the execution context</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>exec</tt></i>:</span></td>
<td>a regexp execution context or NULL to indicate the end</td>
</tr>
<tr>
<td><span class="term"><i><tt>value</tt></i>:</span></td>
<td>the first string token input</td>
</tr>
<tr>
<td><span class="term"><i><tt>value2</tt></i>:</span></td>
<td>the second string token input</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>data associated to the token to reuse in callbacks</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>1 if the regexp reached a final state, 0 if non-final, and a negative value in case of error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegFreeExecCtxt"></a>xmlRegFreeExecCtxt ()</h3>
<pre class="programlisting">void	xmlRegFreeExecCtxt		(<a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a> exec)<br>
</pre>
<p>Free the structures associated to a regular expression evaluation context.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody><tr>
<td><span class="term"><i><tt>exec</tt></i>:</span></td>
<td>a regular expression evaluation context</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegFreeRegexp"></a>xmlRegFreeRegexp ()</h3>
<pre class="programlisting">void	xmlRegFreeRegexp		(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp)<br>
</pre>
<p>Free a regexp</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody><tr>
<td><span class="term"><i><tt>regexp</tt></i>:</span></td>
<td>the regexp</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegNewExecCtxt"></a>xmlRegNewExecCtxt ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegExecCtxtPtr">xmlRegExecCtxtPtr</a>	xmlRegNewExecCtxt	(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br>						 <a href="libxml2-xmlregexp.html#xmlRegExecCallbacks">xmlRegExecCallbacks</a> callback, <br>						 void * data)<br>
</pre>
<p>Build a context used for progressive evaluation of a regexp.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>comp</tt></i>:</span></td>
<td>a precompiled regular expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>callback</tt></i>:</span></td>
<td>a callback function used for handling progresses in the automata matching phase</td>
</tr>
<tr>
<td><span class="term"><i><tt>data</tt></i>:</span></td>
<td>the context data associated to the callback in this context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the new context</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegexpCompile"></a>xmlRegexpCompile ()</h3>
<pre class="programlisting"><a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a>	xmlRegexpCompile	(const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * regexp)<br>
</pre>
<p>Parses a regular expression conforming to XML Schemas Part 2 Datatype Appendix F and builds an automata suitable for testing strings against that regular expression</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>regexp</tt></i>:</span></td>
<td>a regular expression string</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the compiled expression or NULL in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegexpExec"></a>xmlRegexpExec ()</h3>
<pre class="programlisting">int	xmlRegexpExec			(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp, <br>					 const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * content)<br>
</pre>
<p>Check if the regular expression generates the value</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>comp</tt></i>:</span></td>
<td>the compiled regular expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>content</tt></i>:</span></td>
<td>the value to check against the regular expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>1 if it matches, 0 if not and a negative value in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegexpIsDeterminist"></a>xmlRegexpIsDeterminist ()</h3>
<pre class="programlisting">int	xmlRegexpIsDeterminist		(<a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> comp)<br>
</pre>
<p>Check if the regular expression is determinist</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>comp</tt></i>:</span></td>
<td>the compiled regular expression</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>1 if it yes, 0 if not and a negative value in case of error</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlRegexpPrint"></a>xmlRegexpPrint ()</h3>
<pre class="programlisting">void	xmlRegexpPrint			(FILE * output, <br>					 <a href="libxml2-xmlregexp.html#xmlRegexpPtr">xmlRegexpPtr</a> regexp)<br>
</pre>
<p>Print the content of the compiled regular expression</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>output</tt></i>:</span></td>
<td>the file for the output debug</td>
</tr>
<tr>
<td><span class="term"><i><tt>regexp</tt></i>:</span></td>
<td>the compiled regexp</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
</div>
</div>
</body>
</html>

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