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111
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1 struct re_pattern_buffer {
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2 unsigned char *buffer;
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3 unsigned long int allocated;
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4 };
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5 void byte_regex_compile (struct re_pattern_buffer *bufp,
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6 unsigned char *begalt, unsigned char *b)
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7 {
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8 unsigned char *pfrom;
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9 unsigned char *pto;
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10
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11 while ((unsigned long) (b - bufp->buffer + 3) > bufp->allocated)
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12 {
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13 unsigned char *old_buffer = bufp->buffer;
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14 bufp->allocated <<= 1;
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15 if (old_buffer != bufp->buffer)
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16 {
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17 int incr = bufp->buffer - old_buffer;
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18 b += incr;
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19 }
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20 }
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21 pfrom = b;
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22 pto = b + 3;
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23 while (pfrom != begalt)
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24 *--pto = *--pfrom;
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25 }
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26
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