211 lines
3.9 KiB
PHP
211 lines
3.9 KiB
PHP
proc string.length uses ebx, _str
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mov eax, 0
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mov ebx, [_str]
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@@:
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cmp [ebx], byte 0
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je @f
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inc eax
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inc ebx
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jmp @b
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@@:
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ret
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endp
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proc string.copy uses eax ebx ecx, _src, _dst
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mov eax, [_src]
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mov ebx, [_dst]
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@@:
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mov cl, [eax]
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mov [ebx], cl
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cmp cl, 0
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je @f
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inc eax
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inc ebx
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jmp @b
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@@:
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ret
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endp
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proc string.concatenate uses eax, _src, _dst
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stdcall string.length, [_dst]
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add eax, [_dst]
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stdcall string.copy, [_src], eax
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ret
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endp
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proc string.cmp uses ecx esi edi, _str1, _str2, _n
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mov ecx, [_n]
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test ecx, ecx ; Max length is zero?
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je .done
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mov esi, [_str1] ; esi = string s1
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mov edi, [_str2] ; edi = string s2
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cld
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.compare:
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cmpsb ; Compare two bytes
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jne .done
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cmp byte [esi-1], 0 ; End of string?
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je .done
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dec ecx ; Length limit reached?
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jne .compare
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.done:
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seta al ; al = (s1 > s2)
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setb ah ; ah = (s1 < s2)
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sub al, ah
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movsx eax, al ; eax = (s1 > s2) - (s1 < s2), i.e. -1, 0, 1
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ret
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endp
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proc string.to_lower_case uses eax, _str
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mov eax, [_str]
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@@:
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cmp [eax], byte 0
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je @f
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cmp [eax], byte 65
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jl .next
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cmp [eax], byte 90
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jg .next
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add [eax], byte 97 - 65
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.next:
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inc eax
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jmp @b
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@@:
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ret
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endp
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proc string.to_upper_case uses eax, _str
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mov eax, [_str]
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@@:
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cmp [eax], byte 0
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je @f
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cmp [eax], byte 97
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jl .next
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cmp [eax], byte 122
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jg .next
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sub [eax], byte 97 - 65
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.next:
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inc eax
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jmp @b
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@@:
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ret
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endp
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proc string.match uses ebx ecx edx, _str1, _str2
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mov ebx, [_str1]
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mov ecx, [_str2]
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@@:
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cmp [ebx], byte 0
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je @f
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cmp [ecx], byte 0
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je @f
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mov dl, [ebx]
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cmp [ecx], byte '?'
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je .next
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cmp [ecx], byte '*'
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je .next_ebx
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cmp [ecx], dl
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je .next
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cmp [ecx - 1], byte '*'
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je .next_ecx
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jmp @f
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.next_ecx:
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dec ecx
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jmp .next
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.next_ebx:
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dec ebx
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.next:
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inc ebx
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inc ecx
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jmp @b
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@@:
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@@:
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cmp [ecx], byte 0
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je @f
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cmp [ecx], byte '*'
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jne @f
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inc ecx
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jmp @b
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@@:
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cmp [ecx], byte 0
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je @f
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mov eax, 0
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ret
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@@:
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mov eax, 1
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ret
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endp
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proc string.trim_last uses eax, _str
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stdcall string.length, [_str]
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add eax, [_str]
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dec eax
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@@:
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cmp [eax], byte ' '
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jne @f
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mov [eax], byte 0
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dec eax
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jmp @b
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@@:
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ret
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endp
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proc string.trim_first, _str
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mov eax, [_str]
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@@:
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cmp [eax], byte ' '
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jne @f
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inc eax
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jmp @b
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@@:
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ret
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endp
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proc string.index_of uses ebx ecx, _str, _char, _num
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mov ebx, [_char]
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mov ecx, [_str]
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mov eax, 0
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@@:
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cmp [ecx], byte 0
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je @f
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cmp [ecx], bl
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jne .after_check
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dec [_num]
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jz .finded
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.after_check:
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inc ecx
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inc eax
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jmp @b
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@@:
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mov eax, -1
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.finded:
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ret
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endp
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proc string.last_index_of uses ebx ecx, _str, _char, _num
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stdcall string.length, [_str]
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mov ecx, [_str]
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add ecx, eax
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mov ebx, [_char]
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@@:
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cmp eax, 0
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je @f
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cmp [ecx], bl
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jne .after_check
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dec [_num]
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jz .finded
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.after_check:
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dec ecx
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dec eax
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jmp @b
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@@:
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mov eax, -2
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.finded:
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inc eax
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ret
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endp |