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https://github.com/MariaDB/server.git
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6b97c26a29
Added checking of return value from malloc() in reg_init() client/mysqltest.c: Added comment dbug/dbug.c: Removed not needed test mysys/charset.c: Added checking of return value from my_once_alloc() regex/reginit.c: Abort if out of memory in reg_init() (unlikely) sql/item_strfunc.cc: Added comment
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/* Init cclasses array from ctypes */
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#include <my_global.h>
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#include <m_ctype.h>
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#include <m_string.h>
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#include "cclass.h"
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static bool regex_inited=0;
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void regex_init()
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{
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char buff[CCLASS_LAST][256];
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int count[CCLASS_LAST];
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uint i;
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if (!regex_inited)
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{
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regex_inited=1;
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bzero((gptr) &count,sizeof(count));
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for (i=1 ; i<= 255; i++)
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{
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if (isalnum(i))
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buff[CCLASS_ALNUM][count[CCLASS_ALNUM]++]=(char) i;
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if (isalpha(i))
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buff[CCLASS_ALPHA][count[CCLASS_ALPHA]++]=(char) i;
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if (iscntrl(i))
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buff[CCLASS_CNTRL][count[CCLASS_CNTRL]++]=(char) i;
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if (isdigit(i))
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buff[CCLASS_DIGIT][count[CCLASS_DIGIT]++]=(char) i;
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if (isgraph(i))
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buff[CCLASS_GRAPH][count[CCLASS_GRAPH]++]=(char) i;
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if (islower(i))
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buff[CCLASS_LOWER][count[CCLASS_LOWER]++]=(char) i;
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if (isprint(i))
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buff[CCLASS_PRINT][count[CCLASS_PRINT]++]=(char) i;
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if (ispunct(i))
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buff[CCLASS_PUNCT][count[CCLASS_PUNCT]++]=(char) i;
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if (isspace(i))
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buff[CCLASS_SPACE][count[CCLASS_SPACE]++]=(char) i;
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if (isupper(i))
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buff[CCLASS_UPPER][count[CCLASS_UPPER]++]=(char) i;
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if (isxdigit(i))
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buff[CCLASS_XDIGIT][count[CCLASS_XDIGIT]++]=(char) i;
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}
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buff[CCLASS_BLANK][0]=' ';
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buff[CCLASS_BLANK][1]='\t';
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count[CCLASS_BLANK]=2;
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for (i=0; i < CCLASS_LAST ; i++)
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{
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char *tmp=(char*) malloc(count[i]+1);
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if (!tmp)
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{
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/*
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This is very unlikely to happen as this function is called once
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at program startup
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*/
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fprintf(stderr,
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"Fatal error: Can't allocate memory in regex_init\n");
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exit(1);
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}
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memcpy(tmp,buff[i],count[i]*sizeof(char));
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tmp[count[i]]=0;
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cclasses[i].chars=tmp;
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}
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}
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return;
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}
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void regex_end()
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{
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if (regex_inited)
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{
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int i;
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for (i=0; i < CCLASS_LAST ; i++)
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free((char*) cclasses[i].chars);
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regex_inited=0;
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}
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}
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