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annotate uptools/libcoding/gsm7_encode.c @ 619:f82551c77e58

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libserial-newlnx: ASYNC_LOW_LATENCY patch reverted Reports from Das Signal indicate that loadtools performance on Debian is about the same as on Slackware, and that including or omitting the ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the patch in question does not appear to be necessary, it is being reverted until and unless someone other than Serg reports an actual real-world system on which loadtools operation times are slowed compared to the Mother's Slackware reference and on which Slackware-like performance can be restored by setting the ASYNC_LOW_LATENCY flag.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 01:09:48 +0000
parents 061f8d75083d
children ec7e23d5151f
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dbeb4a5628f5 uptools/libcoding: implemented 8859-1 -> GSM7 encoding function
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1 /*
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2 * This library module implements the function for encoding from ISO 8859-1
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3 * into the GSM 7-bit default alphabet (03.38 or 23.038).
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4 */
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5
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6 #include <sys/types.h>
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7
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8 extern u_char gsm7_encode_table[256];
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9
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10 latin1_to_gsm7(inbuf, outbuf, outmax, outlenp)
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11 u_char *inbuf, *outbuf;
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12 unsigned outmax, *outlenp;
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13 {
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14 u_char *ip = inbuf, *op = outbuf;
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15 unsigned outcnt = 0, c, n;
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16
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17 while (c = *ip++) {
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18 c = gsm7_encode_table[c];
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19 if (c == 0xFF)
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20 return(-1);
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21 if (c & 0x80)
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22 n = 2;
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23 else
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24 n = 1;
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25 if (outcnt + n > outmax)
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26 return(-2);
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27 if (c & 0x80) {
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28 *op++ = 0x1B;
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29 *op++ = c & 0x7F;
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30 } else
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31 *op++ = c;
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061f8d75083d uptools/libcoding/gsm7_encode.c: bug found on review
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32 outcnt += n;
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33 }
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34 *outlenp = outcnt;
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35 return(0);
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36 }