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| version 1.193, 2004/01/30 09:56:49 | version 1.228, 2009/06/20 02:16:18 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: string class. @see untalength_t.C. | Parser: string class. @see untalength_t.C. |
| Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| static const char * const IDENT_STRING_C="$Date$"; | static const char * const IDENT_STRING_C="$Date$"; |
| #include "pcre.h" | |
| #include "pa_string.h" | #include "pa_string.h" |
| #include "pa_exception.h" | #include "pa_exception.h" |
| #include "pa_table.h" | #include "pa_table.h" |
| #include "pa_dictionary.h" | #include "pa_dictionary.h" |
| #include "pa_charset.h" | #include "pa_charset.h" |
| #include "pa_vregex.h" | |
| const String String::Empty; | const String String::Empty; |
| Line 21 int pa_atoi(const char* str, const Strin | Line 20 int pa_atoi(const char* str, const Strin |
| if(!str) | if(!str) |
| return 0; | return 0; |
| while(*str && isspace(*str)) | while(*str && isspace((unsigned char)*str)) |
| str++; | str++; |
| if(!*str) | if(!*str) |
| return 0; | return 0; |
| int result; | int result; |
| char *error_pos; | char *error_pos; |
| bool negative=false; | |
| if(str[0]=='-') { | |
| negative=true; | |
| str++; | |
| } else if(str[0]=='+') { | |
| str++; | |
| } | |
| // 0xABC | // 0xABC |
| if(str[0]=='0') | if(str[0]=='0') |
| if(str[1]=='x' || str[1]=='X') | if(str[1]=='x' || str[1]=='X') |
| result=(int)(unsigned long)strtol(str, &error_pos, 0); | result=(int)(unsigned long)strtol(str, &error_pos, 0); |
| else | else { |
| result=(int)strtol(str+1/*skip leading 0*/, &error_pos, 0); | // skip leading 0000, to disable octal interpretation |
| do str++; while(*str=='0'); | |
| result=(int)strtol(str, &error_pos, 0); | |
| } | |
| else | else |
| result=(int)strtol(str, &error_pos, 0); | result=(int)strtol(str, &error_pos, 0); |
| if(negative) | |
| result=-result; | |
| while(char c=*error_pos++) | while(char c=*error_pos++) |
| if(!isspace(c)) | if(!isspace((unsigned char)c)) |
| throw Exception("number.format", | throw Exception("number.format", |
| problem_source, | problem_source, |
| problem_source?"invalid number (int)": "'%s' is invalid number (int)", str); | problem_source?"invalid number (int)": "'%s' is invalid number (int)", str); |
| Line 50 double pa_atod(const char* str, const St | Line 61 double pa_atod(const char* str, const St |
| if(!str) | if(!str) |
| return 0; | return 0; |
| while(*str && isspace(*str)) | while(*str && isspace((unsigned char)*str)) |
| str++; | str++; |
| if(!*str) | if(!*str) |
| return 0; | return 0; |
| double result; | double result; |
| char *error_pos; | char *error_pos; |
| bool negative=false; | |
| if(str[0]=='-') { | |
| negative=true; | |
| str++; | |
| } else if(str[0]=='+') { | |
| str++; | |
| } | |
| // 0xABC | // 0xABC |
| if(str[0]=='0') | if(str[0]=='0') |
| if(str[1]=='x' || str[1]=='X') | if(str[1]=='x' || str[1]=='X') |
| result=(double)(unsigned long)strtol(str, &error_pos, 0); | result=(double)(unsigned long)strtol(str, &error_pos, 0); |
| else | else { |
| result=(double)strtod(str+1/*skip leading 0*/, &error_pos); | // skip leading 0000, to disable octal interpretation |
| do str++; while(*str=='0'); | |
| result=(double)strtod(str, &error_pos); | |
| } | |
| else | else |
| result=(double)strtod(str, &error_pos); | result=(double)strtod(str, &error_pos); |
| if(negative) | |
| result=-result; | |
| while(char c=*error_pos++) | while(char c=*error_pos++) |
| if(!isspace(c)) | if(!isspace((unsigned char)c)) |
| throw Exception("number.format", | throw Exception("number.format", |
| problem_source, | problem_source, |
| problem_source?"invalid number (double)": "'%s' is invalid number (double)", str); | problem_source?"invalid number (double)": "'%s' is invalid number (double)", str); |
| Line 80 double pa_atod(const char* str, const St | Line 103 double pa_atod(const char* str, const St |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| typedef struct { | typedef struct { |
| ssize_t countdown; | ssize_t countdown; |
| char target; /* Character we're looking for */ | int target; /* Character we're looking for */ |
| } chr_data; | } chr_data; |
| #endif | #endif |
| static int CORD_range_contains_chr_greater_then_proc(char c, size_t size, void* client_data) | static int CORD_range_contains_chr_greater_then_proc(char c, size_t size, void* client_data) |
| Line 139 Table string_match_table_template(new St | Line 162 Table string_match_table_template(new St |
| String::Body String::Body::Format(int value) { | String::Body String::Body::Format(int value) { |
| char local[MAX_NUMBER]; | char local[MAX_NUMBER]; |
| size_t length=snprintf(local, MAX_NUMBER, "%d", value); | size_t length=snprintf(local, MAX_NUMBER, "%d", value); |
| return String::Body(pa_strdup(local, length), length); | return String::Body(pa_strdup(local, length)); |
| } | |
| String::Body String::Body::trim(String::Trim_kind kind, const char* chars, | |
| size_t* out_start, size_t* out_length) const { | |
| size_t our_length=length(); | |
| if(!our_length) | |
| return *this; | |
| if(!chars) | |
| chars=" \t\n"; // white space | |
| size_t start=0; | |
| size_t end=our_length; | |
| // from left... | |
| if(kind!=TRIM_END) { | |
| CORD_pos pos; set_pos(pos, 0); | |
| while(true) { | |
| char c=CORD_pos_fetch(pos); | |
| if(strchr(chars, c)) { | |
| if(++start==our_length) | |
| return 0; // all chars are empty, just return empty string | |
| } else | |
| break; | |
| CORD_next(pos); | |
| } | |
| } | |
| // from right.. | |
| if(kind!=TRIM_START) { | |
| CORD_pos pos; set_pos(pos, end-1); | |
| while(true) { | |
| char c=CORD_pos_fetch(pos); | |
| if(strchr(chars, c)) { | |
| if(--end==0) // optimization: NO need to check for 'end>=start', that's(<) impossible | |
| return 0; // all chars are empty, just return empty string | |
| } else | |
| break; | |
| CORD_prev(pos); | |
| } | |
| } | |
| if(start==0 && end==our_length) // nobody moved a thing | |
| return *this; | |
| if(out_start) | |
| *out_start=start; | |
| size_t new_length=end-start; | |
| if(out_length) | |
| *out_length=new_length; | |
| return mid(start, new_length); | |
| } | } |
| static int CORD_batched_iter_fn_generic_hash_code(char c, void * client_data) { | static int CORD_batched_iter_fn_generic_hash_code(char c, void * client_data) { |
| Line 152 static int CORD_batched_iter_fn_generic_ | Line 226 static int CORD_batched_iter_fn_generic_ |
| generic_hash_code(result, s); | generic_hash_code(result, s); |
| return 0; | return 0; |
| }; | }; |
| uint String::Body::hash_code() const { | uint String::Body::get_hash_code() const { |
| uint result=0; | #ifdef HASH_CODE_CACHING |
| CORD_iter5(body, 0, | if(hash_code) |
| CORD_batched_iter_fn_generic_hash_code, | return hash_code; |
| CORD_batched_iter_fn_generic_hash_code, &result); | #else |
| return result; | uint hash_code=0; |
| #endif | |
| if (body && CORD_IS_STRING(body)){ | |
| generic_hash_code(hash_code, body); | |
| } else { | |
| CORD_iter5(body, 0, | |
| CORD_batched_iter_fn_generic_hash_code, | |
| CORD_batched_iter_fn_generic_hash_code, &hash_code); | |
| } | |
| return hash_code; | |
| } | } |
| // String methods | // String methods |
| String::String(const char* cstr, size_t helper_length, bool tainted): body(CORD_EMPTY) { | |
| append_help_length(cstr, helper_length, tainted?L_TAINTED:L_CLEAN); | |
| } | |
| String::String(const String::C cstr, bool tainted): body(CORD_EMPTY) { | |
| append_know_length(cstr.str, cstr.length, tainted?L_TAINTED:L_CLEAN); | |
| } | |
| String& String::append_know_length(const char* str, size_t known_length, Language lang) { | String& String::append_know_length(const char* str, size_t known_length, Language lang) { |
| if(!known_length) | if(!known_length) |
| return *this; | return *this; |
| Line 190 String& String::append_help_length(const | Line 266 String& String::append_help_length(const |
| return append_know_length(str, known_length, lang); | return append_know_length(str, known_length, lang); |
| } | } |
| String::String(int value, char *format) : langs(L_CLEAN){ | |
| char buf[MAX_NUMBER]; | |
| body.append_strdup_know_length(buf, snprintf(buf, MAX_NUMBER, format, value)); | |
| } | |
| String& String::append_strdup(const char* str, size_t helper_length, Language lang) { | String& String::append_strdup(const char* str, size_t helper_length, Language lang) { |
| size_t known_length=helper_length?helper_length:strlen(str); | size_t known_length=helper_length?helper_length:strlen(str); |
| if(!known_length) | if(!known_length) |
| Line 204 String& String::append_strdup(const char | Line 284 String& String::append_strdup(const char |
| return *this; | return *this; |
| } | } |
| int CORD_batched_len(const char* s, size_t* len){ | |
| (*len) += lengthUTF8( (const XMLByte *)s, (const XMLByte *)s+strlen(s)); | |
| return 0; | |
| } | |
| // can be called only for IS_FUNCTION(CORD) which are used only in Lang | |
| int CORD_batched_len(const char, size_t *len){ | |
| (*len)++; | |
| return 0; | |
| } | |
| size_t String::length(Charset& charset) const { | |
| if(charset.isUTF8()){ | |
| size_t len=0; | |
| body.for_each<size_t *>(CORD_batched_len, CORD_batched_len, &len); | |
| return len; | |
| } else | |
| return body.length(); | |
| } | |
| /// @todo check in doc: whether it documents NOW bad situation "abc".mid(-1, 3) =were?="ab" | /// @todo check in doc: whether it documents NOW bad situation "abc".mid(-1, 3) =were?="ab" |
| String& String::mid(size_t substr_begin, size_t substr_end) const { | String& String::mid(size_t substr_begin, size_t substr_end) const { |
| String& result=*new String; | String& result=*new String; |
| Line 220 String& String::mid(size_t substr_begin, | Line 320 String& String::mid(size_t substr_begin, |
| // next: letters themselves | // next: letters themselves |
| result.body=body.mid(substr_begin, substr_length); | result.body=body.mid(substr_begin, substr_length); |
| // SAPI::log("piece of '%s' from %d to %d is '%s'", | ASSERT_STRING_INVARIANT(result); |
| //cstr(), substr_begin, substr_end, result.cstr()); | return result; |
| } | |
| // from, to and helper_length in characters, not in bytes (it's important for utf-8) | |
| String& String::mid(Charset& charset, size_t from, size_t to, size_t helper_length) const { | |
| String& result=*new String; | |
| size_t self_length=(helper_length)?helper_length:length(charset); | |
| if(!self_length) | |
| return result; | |
| from=min(min(to, from), self_length); | |
| to=min(max(to, from), self_length); | |
| size_t substr_length=to-from; | |
| if(!substr_length) | |
| return result; | |
| if(charset.isUTF8()){ | |
| const XMLByte* srcPtr=(const XMLByte*)cstrm(); | |
| const XMLByte* srcEnd=srcPtr+body.length(); | |
| // convert 'from' and 'substr_length' from 'characters' to 'bytes' | |
| from=getUTF8BytePos(srcPtr, srcEnd, from); | |
| substr_length=getUTF8BytePos(srcPtr+from, srcEnd, substr_length); | |
| if(!substr_length) | |
| return result; | |
| } | |
| // first: their langs | |
| result.langs.append(result.body, langs, from, substr_length); | |
| // next: letters themselves | |
| result.body=body.mid(from, substr_length); | |
| ASSERT_STRING_INVARIANT(result); | ASSERT_STRING_INVARIANT(result); |
| return result; | return result; |
| } | } |
| Line 246 size_t String::pos(const String& substr, | Line 381 size_t String::pos(const String& substr, |
| return pos(substr.body, this_offset, lang); | return pos(substr.body, this_offset, lang); |
| } | } |
| size_t String::pos(Charset& charset, const String& substr, | |
| size_t this_offset, Language lang) const { | |
| size_t result; | |
| if(charset.isUTF8()){ | |
| const XMLByte* srcPtr=(const XMLByte*)cstrm(); | |
| const XMLByte* srcEnd=srcPtr+body.length(); | |
| // convert 'this_offset' from 'characters' to 'bytes' | |
| this_offset=getUTF8BytePos(srcPtr, srcEnd, this_offset); | |
| result=pos(substr.body, this_offset, lang); | |
| if(result==CORD_NOT_FOUND) | |
| return STRING_NOT_FOUND; | |
| // convert 'result' from 'bytes' to 'characters' | |
| result=getUTF8CharPos(srcPtr, srcEnd, result); | |
| } else { | |
| result=pos(substr.body, this_offset, lang); | |
| if(result==CORD_NOT_FOUND) | |
| return STRING_NOT_FOUND; | |
| } | |
| return result; | |
| } | |
| void String::split(ArrayString& result, | void String::split(ArrayString& result, |
| size_t& pos_after, | size_t& pos_after, |
| const char* delim, | const char* delim, |
| Line 291 void String::split(ArrayString& result, | Line 452 void String::split(ArrayString& result, |
| } | } |
| } | } |
| static void regex_options(const String* options, int *result, bool& need_pre_post_match){ | Table* String::match(VRegex* vregex, |
| struct Regex_option { | Row_action row_action, void *info, |
| const char* keyL; | int& matches_count) const { |
| const char* keyU; | |
| int clear, set; | |
| int *result; | |
| bool *flag; | |
| } regex_option[]={ | |
| {"i", "I", 0, PCRE_CASELESS, result, 0}, // a=A | |
| {"s", "S", 0, PCRE_DOTALL, result, 0}, // \n\n$ [default] | |
| {"x", "U", 0, PCRE_EXTENDED, result, 0}, // whitespace in regex ignored | |
| {"m", "M", PCRE_DOTALL, PCRE_MULTILINE, result, 0}, // ^aaa\n$^bbb\n$ | |
| {"g", "G", 0, 1, result+1, 0}, // many rows | |
| {"'", 0, 0, 0, 0, &need_pre_post_match}, | |
| {0, 0, 0, 0, 0, 0} | |
| }; | |
| result[0]=PCRE_EXTRA | PCRE_DOTALL | PCRE_DOLLAR_ENDONLY; | |
| result[1]=0; | |
| if(options && !options->is_empty()) | |
| for(Regex_option *o=regex_option; o->keyL; o++) | |
| if(options->pos(o->keyL)!=STRING_NOT_FOUND | |
| || (o->keyU && options->pos(o->keyU)!=STRING_NOT_FOUND)) { | |
| if(o->flag) | |
| *o->flag=true; | |
| else { // result | |
| *o->result &= ~o->clear; | |
| *o->result |= o->set; | |
| } | |
| } | |
| } | |
| Table* String::match(Charset& source_charset, | // vregex->info(); // I have no idea what does it for? |
| const String& regexp, | |
| const String* options, | bool need_pre_post_match=vregex->is_pre_post_match_needed(); |
| Row_action row_action, void *info, | bool global=vregex->is_global_search(); |
| bool& just_matched) const { | |
| if(regexp.is_empty()) | |
| throw Exception(0, | |
| 0, | |
| "regexp is empty"); | |
| const char* pattern=regexp.cstr(); | |
| const char* errptr; | |
| int erroffset; | |
| bool need_pre_post_match=false; | |
| int option_bits[2]={0}; regex_options(options, option_bits, need_pre_post_match); | |
| bool global=option_bits[1]!=0; | |
| pcre *code=pcre_compile(pattern, option_bits[0], | |
| &errptr, &erroffset, | |
| source_charset.pcre_tables); | |
| if(!code) | |
| throw Exception(0, | |
| ®exp.mid(erroffset, regexp.length()), | |
| "regular expression syntax error - %s", errptr); | |
| int subpatterns=pcre_info(code, 0, 0); | |
| if(subpatterns<0) { | |
| pcre_free(code); | |
| throw Exception(0, | |
| ®exp, | |
| "pcre_info error (%d)", | |
| subpatterns); | |
| } | |
| const char* subject=cstr(); | const char* subject=cstr(); |
| size_t subject_length=strlen(subject); | size_t subject_length=strlen(subject); |
| const int oveclength=(1/*match*/+MAX_MATCH_GROUPS)*3; | const int ovector_size=(1/*match*/+MAX_MATCH_GROUPS)*3; |
| int ovector[oveclength]; | int ovector[ovector_size]; |
| // create table | |
| Table::Action_options table_options; | Table::Action_options table_options; |
| Table& table=*new Table(string_match_table_template, table_options); | Table& table=*new Table(string_match_table_template, table_options); |
| int exec_option_bits=0; | |
| int prestart=0; | int prestart=0; |
| int poststart=0; | int poststart=0; |
| int postfinish=length(); | int postfinish=length(); |
| while(true) { | while(true) { |
| int exec_substrings=pcre_exec(code, 0, | int exec_result=vregex->exec(subject, subject_length, ovector, ovector_size, prestart); |
| subject, subject_length, prestart, | |
| exec_option_bits, ovector, oveclength); | |
| if(exec_substrings==PCRE_ERROR_NOMATCH) { | |
| pcre_free(code); | |
| row_action(table, 0/*last time, no raw*/, 0, 0, poststart, postfinish, info); | |
| if(global || subpatterns) | |
| return &table; // global or with subpatterns=true+result | |
| else { | |
| just_matched=false; return 0; // not global=no result | |
| } | |
| } | |
| if(exec_substrings<0) { | if(exec_result<0) // only PCRE_ERROR_NOMATCH might be here, other negative results cause an exception |
| pcre_free(code); | break; |
| throw Exception(0, | |
| ®exp, | |
| "regular expression execute error (%d)", | |
| exec_substrings); | |
| } | |
| int prefinish=ovector[0]; | int prefinish=ovector[0]; |
| poststart=ovector[1]; | poststart=ovector[1]; |
| Line 406 Table* String::match(Charset& source_cha | Line 491 Table* String::match(Charset& source_cha |
| *row+=&Empty; // .postmatch | *row+=&Empty; // .postmatch |
| } | } |
| for(int i=1; i<exec_substrings; i++) { | for(int i=1; i<exec_result; i++) { |
| // -1:-1 case handled peacefully by mid() itself | // -1:-1 case handled peacefully by mid() itself |
| *row+=&mid(ovector[i*2+0], ovector[i*2+1]); // .i column value | *row+=&mid(ovector[i*2+0], ovector[i*2+1]); // .i column value |
| } | } |
| matches_count++; | |
| row_action(table, row, prestart, prefinish, poststart, postfinish, info); | row_action(table, row, prestart, prefinish, poststart, postfinish, info); |
| if(!global || prestart==poststart) { // not global | going to hang | if(!global || prestart==poststart) // last step |
| pcre_free(code); | break; |
| row_action(table, 0/*last time, no row*/, 0, 0, poststart, postfinish, info); | |
| return &table; | |
| } | |
| prestart=poststart; | |
| /* | prestart=poststart; |
| if(option_bits[0] & PCRE_MULTILINE) | |
| exec_option_bits|=PCRE_NOTBOL; // start of subject+startoffset not BOL | |
| */ | |
| } | } |
| row_action(table, 0/*last time, no raw*/, 0, 0, poststart, postfinish, info); | |
| return vregex->is_just_count() ? 0 : &table; | |
| } | } |
| String& String::change_case(Charset& source_charset, Change_case_kind kind) const { | String& String::change_case(Charset& source_charset, Change_case_kind kind) const { |
| Line 433 String& String::change_case(Charset& sou | Line 515 String& String::change_case(Charset& sou |
| return result; | return result; |
| char* new_cstr=cstrm(); | char* new_cstr=cstrm(); |
| size_t new_cstr_len=length(); | |
| if(source_charset.isUTF8()) { | if(source_charset.isUTF8()) { |
| size_t new_cstr_len=length(); | |
| switch(kind) { | switch(kind) { |
| case CC_UPPER: | case CC_UPPER: |
| change_case_UTF8((const XMLByte*)new_cstr, new_cstr_len, (XMLByte*)new_cstr, new_cstr_len, UTF8CaseToUpper); | change_case_UTF8((const XMLByte*)new_cstr, new_cstr_len, (XMLByte*)new_cstr, new_cstr_len, UTF8CaseToUpper); |
| Line 483 String& String::change_case(Charset& sou | Line 566 String& String::change_case(Charset& sou |
| return result; | return result; |
| } | } |
| const String& String::escape(Charset& source_charset) const { | |
| if(is_empty()) | |
| return *this; | |
| return Charset::escape(*this, source_charset); | |
| } | |
| const String& String::replace(const Dictionary& dict) const { | const String& String::replace(const Dictionary& dict) const { |
| String& result=*new String(); | String& result=*new String(); |
| const char* old_cstr=cstr(); | const char* old_cstr=cstr(); |
| Line 536 static int serialize_lang_piece(char ala | Line 626 static int serialize_lang_piece(char ala |
| } | } |
| String::Cm String::serialize(size_t prolog_length) const { | String::Cm String::serialize(size_t prolog_length) const { |
| size_t fragments_count=langs.count(); | size_t fragments_count=langs.count(); |
| size_t body_length=body.length(); | |
| size_t buf_length= | size_t buf_length= |
| prolog_length //1 | prolog_length //1 |
| +sizeof(size_t) //2 | +sizeof(size_t) //2 |
| +fragments_count*(sizeof(char)+sizeof(size_t)) //3 | +body_length //3 |
| +body.length() //4 | +1 // 4 for zero terminator used in deserialize |
| +1; // for zero terminator used in deserialize | +sizeof(size_t) //5 |
| +fragments_count*(sizeof(char)+sizeof(size_t)); //6 | |
| String::Cm result(new(PointerFreeGC) char[buf_length], buf_length); | String::Cm result(new(PointerFreeGC) char[buf_length], buf_length); |
| // 1: prolog | // 1: prolog |
| char *cur=result.str+prolog_length; | char *cur=result.str+prolog_length; |
| // 2: langs.count [WARNING: not cast, addresses must be %4=0 on sparc] | // 2: chars.count [WARNING: not cast, addresses must be %4=0 on sparc] |
| memcpy(cur, &body_length, sizeof(body_length)); cur+=sizeof(body_length); | |
| // 3: letters | |
| body.for_each(serialize_body_char, serialize_body_piece, &cur); | |
| // 4: zero terminator | |
| *cur++=0; | |
| // 5: langs.count [WARNING: not cast, addresses must be %4=0 on sparc] | |
| memcpy(cur, &fragments_count, sizeof(fragments_count)); cur+=sizeof(fragments_count); | memcpy(cur, &fragments_count, sizeof(fragments_count)); cur+=sizeof(fragments_count); |
| // 3: lang info | // 6: lang info |
| langs.for_each(body, serialize_lang_piece, &cur); | langs.for_each(body, serialize_lang_piece, &cur); |
| // 4: letters | |
| body.for_each(serialize_body_char, serialize_body_piece, &cur); | |
| // 5: zero terminator | |
| *cur=0; | |
| return result; | return result; |
| } | } |
| bool String::deserialize(size_t prolog_length, void *buf, size_t buf_length) { | bool String::deserialize(size_t prolog_size, void *buf, size_t buf_size) { |
| if(buf_length<=prolog_length) | size_t in_buf=buf_size; |
| if(in_buf<=prolog_size) | |
| return false; | return false; |
| buf_length-=prolog_length; | in_buf-=prolog_size; |
| buf_length-=1; // 5: zero terminator | |
| // 1: prolog | // 1: prolog |
| const char* cur=(const char* )buf+prolog_length; | const char* cur=(const char* )buf+prolog_size; |
| // 2: chars.count | |
| size_t body_length; | |
| if(in_buf<sizeof(body_length)) // body.length don't fit? | |
| return false; | |
| // [WARNING: not cast, addresses must be %4=0 on sparc] | |
| memcpy(&body_length, cur, sizeof(body_length)); cur+=sizeof(body_length); | |
| in_buf-=sizeof(body_length); | |
| // 2: langs.count | if(in_buf<body_length+1) // letters+terminator don't fit? |
| return false; | |
| // 4: zero terminator | |
| if(cur[body_length] != 0) // in place? | |
| return false; | |
| // 3: letters | |
| body=String::Body(*cur?cur:0); | |
| #ifdef STRING_LENGTH_CACHING | |
| body.set_length(body_length); | |
| #endif | |
| cur+=body_length+1; | |
| in_buf-=body_length+1; | |
| // 5: langs.count | |
| size_t fragments_count; | size_t fragments_count; |
| if(buf_length<sizeof(fragments_count)) // langs.count don't fit? | if(in_buf<sizeof(fragments_count)) // langs.count don't fit? |
| return false; | return false; |
| // [WARNING: not cast, addresses must be %4=0 on sparc] | // [WARNING: not cast, addresses must be %4=0 on sparc] |
| memcpy(&fragments_count, cur, sizeof(fragments_count)); cur+=sizeof(fragments_count); | memcpy(&fragments_count, cur, sizeof(fragments_count)); cur+=sizeof(fragments_count); |
| buf_length-=sizeof(fragments_count); | in_buf-=sizeof(fragments_count); |
| if(fragments_count) { | if(fragments_count) { |
| // 3: lang info | // 6: lang info |
| size_t total_length=0; | size_t total_length=0; |
| for(size_t f=0; f<fragments_count; f++) { | for(size_t f=0; f<fragments_count; f++) { |
| char lang; | char lang; |
| size_t fragment_length; | size_t fragment_length; |
| size_t piece_length=sizeof(lang)+sizeof(fragment_length); | size_t piece_length=sizeof(lang)+sizeof(fragment_length); |
| if(buf_length<piece_length) // lang+length | if(in_buf<piece_length) // lang+length |
| return false; | return false; |
| // lang | // lang |
| Line 589 bool String::deserialize(size_t prolog_l | Line 705 bool String::deserialize(size_t prolog_l |
| // length [WARNING: not cast, addresses must be %4=0 on sparc] | // length [WARNING: not cast, addresses must be %4=0 on sparc] |
| memcpy(&fragment_length, cur, sizeof(fragment_length)); cur+=sizeof(fragment_length); | memcpy(&fragment_length, cur, sizeof(fragment_length)); cur+=sizeof(fragment_length); |
| size_t combined_length=total_length+fragment_length; | |
| if(combined_length>body_length) | |
| return false; // file curruption | |
| // uchar needed to prevent propagating 0x80 bit to upper bytes | // uchar needed to prevent propagating 0x80 bit to upper bytes |
| langs.append(total_length, (String::Language)(uchar)lang, fragment_length); | langs.append(total_length, (String::Language)(uchar)lang, fragment_length); |
| total_length+=fragment_length; | total_length=combined_length; |
| in_buf-=piece_length; | |
| buf_length-=piece_length; | |
| } | } |
| // 4: letters | if(total_length!=body_length) // length(all language fragments) vs length(letters) |
| if(buf_length!=total_length) | |
| return false; | return false; |
| // serialize wrote extra zero byte there, we can rely on that | |
| body=String::Body(cur, buf_length); | |
| } | } |
| if(in_buf!=0) // some strange extra bytes | |
| return false; | |
| ASSERT_STRING_INVARIANT(*this); | ASSERT_STRING_INVARIANT(*this); |
| return true; | return true; |
| Line 611 bool String::deserialize(size_t prolog_l | Line 727 bool String::deserialize(size_t prolog_l |
| const char* String::Body::v() const { | const char* String::Body::v() const { |
| return CORD_to_const_char_star(body); | return CORD_to_const_char_star(body); |
| } | } |
| void String::Body::dump() const { | |
| CORD_dump(body); | |
| } | |
| const char* String::Languages::v() const { | const char* String::Languages::v() const { |
| if(opt.is_not_just_lang) | if(opt.is_not_just_lang) |
| return CORD_to_const_char_star(langs); | return CORD_to_const_char_star(langs); |
| else | else |
| return (const char*)&langs; | return (const char*)&langs; |
| } | } |
| void String::Languages::dump() const { | |
| if(opt.is_not_just_lang) | |
| CORD_dump(langs); | |
| else | |
| puts((const char*)&langs); | |
| } | |
| const char* String::v() const { | const char* String::v() const { |
| #define LIMIT_VIEW 20 | const uint LIMIT_VIEW=20; |
| char* buf=(char*)malloc(MAX_STRING); | char* buf=(char*)malloc(MAX_STRING); |
| const char*body_view=body.v(); | const char*body_view=body.v(); |
| const char*langs_view=langs.v(); | const char*langs_view=langs.v(); |
| Line 630 const char* String::v() const { | Line 756 const char* String::v() const { |
| ); | ); |
| return buf; | return buf; |
| #undef LIMIT_VIEW | } |
| void String::dump() const { | |
| body.dump(); | |
| langs.dump(); | |
| } | |
| const String& String::trim(String::Trim_kind kind, const char* chars) const { | |
| if(is_empty()) | |
| return *this; | |
| size_t substr_begin, substr_length; | |
| Body new_body=body.trim(kind, chars, &substr_begin, &substr_length); | |
| if(new_body==body) // we received unchanged pointer, do likewise | |
| return *this; | |
| // new_body differs from body, adjust langs along | |
| String& result=*new String; | |
| if(!new_body) // body.trim produced empty result | |
| return result; | |
| // body.trim produced nonempty result | |
| // first: their langs | |
| result.langs.append(result.body, langs, substr_begin, substr_length); | |
| // next: letters themselves | |
| result.body=new_body; | |
| ASSERT_STRING_INVARIANT(result); | |
| return result; | |
| } | } |