regex: bug fixes (#7137)
penguindark
GitHub
parent
89952edd25
commit
4fb37e81b2
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@ -616,7 +616,7 @@ fn (mut re RE) parse_char_class(in_txt string, in_i int) (int, int, rune) {
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}
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}
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if status == .in_bsls {
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println("CC bsls not found [${ch:c}]")
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//println("CC bsls not found [${ch:c}]")
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status = .in_char
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}else {
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continue
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@ -1212,6 +1212,7 @@ fn (mut re RE) impl_compile(in_txt string) (int,int) {
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// set the jump in the right places
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pc1 = 0
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for pc1 < pc-2 {
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//println("Here $pc1 ${pc-2}")
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// two consecutive OR are a syntax error
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if re.prog[pc1+1].ist == ist_or_branch && re.prog[pc1+2].ist == ist_or_branch {
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return err_syntax_error, i
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@ -1238,8 +1239,13 @@ fn (mut re RE) impl_compile(in_txt string) (int,int) {
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re.prog[pc1+1].rep_max = pc2 + 1
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break
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}
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pc2++
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}
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// special case query of few chars, teh true can't go on the first instruction
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if re.prog[pc1+1].rep_max == pc1 {
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re.prog[pc1+1].rep_max = 3
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}
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//println("Compile OR postproc. [$pc1,OR ${pc1+1},$pc2]")
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pc1 = pc2
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continue
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@ -1490,6 +1496,8 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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mut ch := rune(0) // examinated char
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mut char_len := 0 // utf8 examinated char len
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mut m_state := Match_state.start // start point for the matcher FSM
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mut src_end := false
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mut last_fnd_pc := -1
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mut pc := -1 // program counter
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mut state := StateObj{} // actual state
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@ -1599,9 +1607,14 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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dbg_line++
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}
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//******************************************
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/* if ist == ist_prog_end {
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//println("HERE")
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break
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}
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*/
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// we're out of text, manage it
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if i >= in_txt_len || m_state == .new_line {
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src_end = true
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// manage groups
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if group_index >= 0 && state.match_index >= 0 {
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@ -1644,11 +1657,29 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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}
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}
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// manage ist_dot_char
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if pc == -1 {
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pc = last_fnd_pc
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}
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//println("Finished text!!")
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//println("Instruction: ${ist:08x} pc: $pc")
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//println("min_rep: ${re.prog[pc].rep_min} max_rep: ${re.prog[pc].rep_max} rep: ${re.prog[pc].rep}")
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m_state = .end
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break
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//return no_match_found,0
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// program end
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if ist == ist_prog_end {
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//println("Program end on end of text!")
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return first_match,i
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}
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// if we go out of text and we are the last instruction .* check
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if (re.prog[pc+1].ist == ist_prog_end) &&
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(re.prog[pc].rep >= re.prog[pc].rep_min && re.prog[pc].rep <= re.prog[pc].rep_max) {
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//println("Ok .* rep match!")
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return first_match,i
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}
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//m_state = .end
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//break
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return no_match_found,0
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}
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// starting and init
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@ -1697,7 +1728,8 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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if m_state == .stop {
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// we are in search mode, don't exit until the end
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if re.flag & f_src != 0 && ist != ist_prog_end {
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if ((re.flag & f_src) != 0) && (ist != ist_prog_end) {
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last_fnd_pc = pc
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pc = -1
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i += char_len
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m_state = .ist_next
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@ -1741,6 +1773,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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// we have a DOT MATCH on going
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//println("ist_prog_end l_ist: ${l_ist:08x}", l_ist)
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if re.state_stack_index>=0 && l_ist == ist_dot_char {
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i = in_txt_len // dario
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m_state = .stop
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continue
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}
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@ -1832,7 +1865,7 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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first_match = i
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}
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state.match_index = i
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re.prog[pc].rep++
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re.prog[pc].rep++ // increase repetitions
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//if re.prog[pc].rep >= re.prog[pc].rep_min && re.prog[pc].rep <= re.prog[pc].rep_max {
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if re.prog[pc].rep >= 0 && re.prog[pc].rep <= re.prog[pc].rep_max {
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@ -1857,12 +1890,15 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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re.state_stack[re.state_stack_index].i = i + char_len
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}
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//i += char_len // next char
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/*
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// manage * and {0,} quantifier
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if re.prog[pc].rep_min > 0 {
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i += char_len // next char
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l_ist = u32(ist_dot_char)
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if re.prog[pc].rep_max == max_quantifier {
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//println("manage .*")
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m_state = .ist_load
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continue
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}
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*/
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m_state = .ist_next
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continue
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@ -2163,14 +2199,48 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
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return err_internal_error, i
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}
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//println("Check end of text!")
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// Check the results
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if state.match_index >= 0 {
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if group_index < 0 {
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//println("OK match,natural end [$first_match,$i]")
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if re.prog[pc].ist == ist_prog_end {
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//println("program ended!!")
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if (re.flag & f_src) != 0 {
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//println("find return")
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return first_match, i
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} else {
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return 0, i
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}
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}
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//println("No Group here, natural end [$first_match,$i] state: ${state_str(m_state)} ist: $ist pgr_end: $re.prog.len")
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if re.prog[pc+1].ist == ist_prog_end || re.prog[pc].ist == ist_prog_end{
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rep := re.prog[pc].rep
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//println("rep: $rep re.prog[pc].rep_min: ${re.prog[pc].rep_min} re.prog[pc].rep_max: ${re.prog[pc].rep_max}")
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if rep >= re.prog[pc].rep_min && rep <= re.prog[pc].rep_max {
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return first_match, i
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}
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//println("Program not finished! ")
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return no_match_found, 0
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}
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if src_end {
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//println("program end")
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return first_match, i
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}
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//print("No match found!!")
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return no_match_found, 0
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} else {
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//println("Group match! OK")
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//println("first_match: $first_match, i: $i")
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//println("Skip last group")
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return first_match,group_stack[group_index--]
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return first_match,i
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//return first_match,group_stack[group_index--]
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}
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}
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//println("no_match_found, natural end")
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@ -2224,7 +2294,12 @@ fn impl_new_regex_by_size(mult int) RE {
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//
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pub fn (mut re RE) match_string(in_txt string) (int,int) {
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start, end := re.match_base(in_txt.str,in_txt.len)
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start, mut end := re.match_base(in_txt.str, in_txt.len + 1)
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if end > in_txt.len {
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end = in_txt.len
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}
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if start >= 0 && end > start {
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if (re.flag & f_ms) != 0 && start > 0 {
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return no_match_found, 0
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@ -2247,9 +2322,15 @@ pub fn (mut re RE) match_string(in_txt string) (int,int) {
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// find try to find the first match in the input string
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pub fn (mut re RE) find(in_txt string) (int,int) {
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old_flag := re.flag
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re.flag |= f_src // enable search mode
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start, end := re.match_base(in_txt.str, in_txt.len)
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start, mut end := re.match_base(in_txt.str, in_txt.len + 1)
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//print("Find [$start,$end] '${in_txt[start..end]}'")
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if end > in_txt.len {
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end = in_txt.len
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}
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re.flag = old_flag
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if start >= 0 && end > start {
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return start, end
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}
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@ -7,11 +7,11 @@ pub fn (mut re RE) compile_opt(pattern string) ? {
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if re_err != compile_ok {
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mut err_msg := strings.new_builder(300)
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err_str := re.get_parse_error_string(re_err)
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err_msg.write("$err_str\n")
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err_msg.write(" query: $pattern\n")
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err_msg.write("query: $pattern\n")
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line := "-".repeat(err_pos)
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err_msg.write(" err pos: ${line}^")
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err_msg.write("err : ${line}^\n")
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err_str := re.get_parse_error_string(re_err)
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err_msg.write("ERROR: $err_str\n")
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return error_with_code(err_msg.str(), re_err)
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}
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}
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@ -14,6 +14,12 @@ struct TestItem {
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const(
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match_test_suite = [
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// base OR
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TestItem{"a",r"a|b",0,1},
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TestItem{"a",r"b|a",0,1},
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TestItem{"b",r"a|b",0,1},
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TestItem{"b",r"b|a",0,1},
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TestItem{"c",r"b|a",-1,0},
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// positive
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TestItem{"this is a good.",r"this",0,4},
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@ -38,7 +44,7 @@ match_test_suite = [
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TestItem{"this these those ",r"(th[eio]se? ?)+",0,17},
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TestItem{"this these those ",r"(th[eio]se? )+",0,17},
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TestItem{"this,these,those. over",r"(th[eio]se?[,. ])+",0,17},
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TestItem{"soday,this,these,those. over",r"(th[eio]se?[,. ])+",6,23},
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TestItem{"soday,this,these,those. over",r".+(th[eio]se?[,. ])+",0,23},
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TestItem{"cpapaz",r"(c(pa)+z)",0,6},
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TestItem{"this is a cpapaz over",r"(c(pa)+z)",10,16},
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@ -60,7 +66,7 @@ match_test_suite = [
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TestItem{"soday,this,these,those. over",r".*,(th[eio]se?[,. ])+",0,23},
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TestItem{"soday,this,these,thesa.thesi over",r".*,(th[ei]se?[,. ])+(thes[ai][,. ])+",0,29},
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TestItem{"cpapaz ole. pippo,",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,18},
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TestItem{"cpapaz ole. pippo",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,17},
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TestItem{"cpapaz ole. pippo",r"(c(pa)+z)(\s+\a+[\.,]?)+",0,17},
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TestItem{"cpapaz ole. pippo, 852",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,18},
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TestItem{"123cpapaz ole. pippo",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,20},
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TestItem{"...cpapaz ole. pippo",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,20},
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@ -74,7 +80,6 @@ match_test_suite = [
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TestItem{"/home/us_er/pippo/info-01.txt", r"(/?[-\w_]+)*\.txt$",0,29}
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// negative
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TestItem{"zthis ciao",r"((t[hieo]+se?)\s*)+",-1,0},
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TestItem{"this is a good.",r"thes",-1,0},
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@ -88,6 +93,25 @@ match_test_suite = [
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// check unicode
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TestItem{"this is a Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ test",r".*a [Ⅰ-Ⅵ ]+",0,34},
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TestItem{"123Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ test",r"[Ⅰ-Ⅴ\s]+",3,23},
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// new edge cases
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TestItem{"12345678", r"[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]",-1,0},
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TestItem{"12345678", r"[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]",0,8},
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TestItem{"123456789", r"^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$",0,9}
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TestItem{"12345678", r"^\d{8}$",0,8},
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TestItem{"12345678", r"^\d{7}$",-1,0},
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TestItem{"12345678", r"^\d{9}$",-1,0},
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TestItem{"eth", r"(oth)|(eth)",0,3},
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TestItem{"et", r"(oth)|(eth)",-1,0},
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TestItem{"et", r".*(oth)|(eth)",-1,0},
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TestItem{"peoth", r".*(ith)|(eth)",-1,0},
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TestItem{"poth", r"(eth)|(oth)",1,4},
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TestItem{"poth", r"(oth)|(eth)",1,4},
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TestItem{"poth", r".(oth)|(eth)$",0,4},
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TestItem{"poth", r"^.(oth)|(eth)$",0,4},
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TestItem{"poth", r"^\w+$",0,4},
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]
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)
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@ -150,30 +174,35 @@ const (
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cgroups_test_suite = [
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TestItemCGroup{
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"http://www.ciao.mondo/hello/pippo12_/pera.html",
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r"(?P<format>https?)|(?:ftps?)://(?P<token>[\w_]+.)+",0,46,
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[8, 0, 0, 4, 1, 7, 11, 1, 11, 16, 1, 16, 22, 1, 22, 28, 1, 28, 37, 1, 37, 42, 1, 42, 46],
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r"(?P<format>https?)|(?:ftps?)://(?P<token>[\w_]+[\.|/])+",0,42,
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[7, 0, 0, 4, 1, 7, 11, 1, 11, 16, 1, 16, 22, 1, 22, 28, 1, 28, 37, 1, 37, 42],
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{'format':int(0),'token':1}
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},
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TestItemCGroup{
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"http://www.ciao.mondo/hello/pippo12_/pera.html",
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r"(?P<format>https?)|(?P<format>ftps?)://(?P<token>[\w_]+.)+",0,46,
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[8, 0, 0, 4, 1, 7, 11, 1, 11, 16, 1, 16, 22, 1, 22, 28, 1, 28, 37, 1, 37, 42, 1, 42, 46],
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[2, 0, 0, 4, 1, 7, 10],
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{'format':int(0),'token':1}
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},
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TestItemCGroup{
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"http://www.ciao.mondo/hello/pippo12_/pera.html",
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r"(?P<format>https?)|(?P<format>ftps?)://([\w_]+.)+",0,46,
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[8, 0, 0, 4, 1, 7, 11, 1, 11, 16, 1, 16, 22, 1, 22, 28, 1, 28, 37, 1, 37, 42, 1, 42, 46],
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r"(?P<format>https?)|(?P<format>ftps?)://([\w_]+\.)+",0,16,
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[3, 0, 0, 4, 1, 7, 11, 1, 11, 16],
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{'format':int(0)}
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},
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]
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)
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const (
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debug = false // true for debug println
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)
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fn test_regex(){
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// check capturing groups
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for c,to in cgroups_test_suite {
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// debug print
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//println("#$c [$to.src] q[$to.q] ($to.s, $to.e)")
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if debug { println("#$c [$to.src] q[$to.q] ($to.s, $to.e)") }
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mut re := regex.regex_opt(to.q) or {
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eprintln('err: $err')
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@ -191,16 +220,16 @@ fn test_regex(){
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}
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if start != to.s || end != to.e {
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println("#$c [$to.src] q[$to.q] res[$tmp_str] $start, $end")
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//println("#$c [$to.src] q[$to.q] res[$tmp_str] $start, $end")
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println("ERROR!")
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//C.printf("ERROR!! res:(%d, %d) refh:(%d, %d)\n",start, end, to.s, to.e)
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C.printf("ERROR!! res:(%d, %d) refh:(%d, %d)\n",start, end, to.s, to.e)
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assert false
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continue
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}
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// check cgroups
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if re.group_csave.len == 0 || re.group_csave[0] != to.cg[0] {
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println("Capturing group len error!")
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println("Capturing group len error! ${re.group_csave[0]}")
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assert false
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continue
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}
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@ -225,9 +254,9 @@ fn test_regex(){
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}
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// check find_all
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for _,to in match_test_suite_fa{
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for c,to in match_test_suite_fa{
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// debug print
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//println("#$c [$to.src] q[$to.q] $to.r")
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if debug { println("#$c [$to.src] q[$to.q] $to.r") }
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mut re := regex.regex_opt(to.q) or {
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eprintln('err: $err')
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@ -253,9 +282,9 @@ fn test_regex(){
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}
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// check replace
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for _,to in match_test_suite_re{
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for c,to in match_test_suite_re{
|
||||
// debug print
|
||||
//println("#$c [$to.src] q[$to.q] $to.r")
|
||||
if debug { println("#$c [$to.src] q[$to.q] $to.r") }
|
||||
|
||||
mut re := regex.regex_opt(to.q) or {
|
||||
eprintln('err: $err')
|
||||
|
|
@ -274,7 +303,7 @@ fn test_regex(){
|
|||
// check match and find
|
||||
for c,to in match_test_suite {
|
||||
// debug print
|
||||
println("#$c [$to.src] q[$to.q] $to.s $to.e")
|
||||
if debug { println("#$c [$to.src] q[$to.q] $to.s $to.e") }
|
||||
|
||||
// test the find
|
||||
if to.s > 0 {
|
||||
|
|
@ -289,7 +318,7 @@ fn test_regex(){
|
|||
|
||||
if start != to.s || end != to.e {
|
||||
err_str := re.get_parse_error_string(start)
|
||||
println("ERROR : $err_str")
|
||||
println("ERROR : $err_str start: ${start} end: ${end}")
|
||||
assert false
|
||||
} else {
|
||||
//tmp_str := text[start..end]
|
||||
|
|
@ -334,4 +363,7 @@ fn test_regex(){
|
|||
}
|
||||
|
||||
}
|
||||
if debug { println("DONE!") }
|
||||
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,17 +0,0 @@
|
|||
import regex
|
||||
|
||||
const (
|
||||
a_or_b = regex.regex_opt('a|b') ?
|
||||
)
|
||||
|
||||
fn f(s string) bool {
|
||||
mut re := a_or_b
|
||||
start, _ := re.match_string(s)
|
||||
return start != -1
|
||||
}
|
||||
|
||||
fn test_const_regex_works() {
|
||||
assert f('a') == true
|
||||
assert f('b') == true
|
||||
assert f('c') == false
|
||||
}
|
||||
Loading…
Reference in New Issue