mirror of git://git.sysmocom.de/ofono
Simplify function logic
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16
src/sim.c
16
src/sim.c
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@ -631,24 +631,24 @@ static void sim_efli_read_cb(int ok,
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/* Detect whether the file is in EFli format, as opposed to 51.011 EFlp */
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static gboolean sim_efli_format(const unsigned char *ef, int length)
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{
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int i;
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if (length & 1)
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return FALSE;
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while (length) {
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if (ef[0] != ef[1] && (ef[0] == 0xff || ef[1] == 0xff))
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return FALSE;
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for (i = 0; i < length; i += 2) {
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if (ef[i] == 0xff && ef[i+1] == 0xff)
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continue;
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/* ISO 639 country codes are each two lower-case SMS 7-bit
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* characters while CB DCS language codes are in ranges
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* (0 - 15) or (32 - 47), so the ranges don't overlap
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*/
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if (ef[0] != 0xff && (ef[0] < 'a' || ef[0] > 'z'))
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return FALSE;
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if (ef[1] != 0xff && (ef[1] < 'a' || ef[1] > 'z'))
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if (g_ascii_isalpha(ef[i]) == 0)
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return FALSE;
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ef += 2;
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length -= 2;
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if (g_ascii_isalpha(ef[i+1]) == 0)
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return FALSE;
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}
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return TRUE;
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