annotate helpers/makeline.c @ 281:a75eefbf8be4

Phone boot with PWON: weed out short button presses Every standard end user phone has a design provision, most naturally implemented in firmware, whereby the PWON button effects a boot only if it is held down long enough - short presses of this PWON button are detected, assumed to be spurious and cause the fw to power back off instead of proceeding with boot. The present change introduces this standard function in FreeCalypso.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 24 Sep 2021 02:03:08 +0000
parents 775dba605f33
children
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1 /*
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2 * This helper utility for the FreeCalypso Tourmaline build system
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3 * emits potentially long generated Makefile lines, breaking them into
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4 * multiple lines with backslashes.
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11
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12 int is_cmd, equ_or_colon, extra_indent;
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13 int linelen;
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14
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15 main(argc, argv)
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16 char **argv;
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17 {
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18 char **ap;
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19
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20 if (argc < 4) {
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21 fprintf(stderr, "error: too few arguments\n", argv[0]);
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22 exit(1);
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23 }
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24 if (!strcmp(argv[1], "def")) {
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25 is_cmd = 0;
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26 equ_or_colon = '=';
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27 extra_indent = 0;
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28 } else if (!strcmp(argv[1], "dep")) {
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29 is_cmd = 0;
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30 equ_or_colon = ':';
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31 extra_indent = 1;
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32 } else if (!strcmp(argv[1], "cmd")) {
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33 is_cmd = 1;
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34 extra_indent = 1;
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35 } else {
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36 fprintf(stderr, "error: line type \"%s\" not known\n", argv[1]);
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37 exit(1);
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38 }
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39 if (is_cmd) {
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40 putchar('\t');
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41 linelen = 8;
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42 } else
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43 linelen = 0;
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44 fputs(argv[2], stdout);
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45 linelen += strlen(argv[2]);
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46 if (is_cmd) {
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47 putchar(' ');
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48 linelen++;
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49 } else {
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50 putchar(equ_or_colon);
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51 linelen++;
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52 putchar('\t');
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53 do
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54 linelen++;
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55 while (linelen & 7);
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56 }
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57 fputs(argv[3], stdout);
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58 linelen += strlen(argv[3]);
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59 for (ap = argv + 4; *ap; ap++) {
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60 if (linelen + 1 + strlen(*ap) <= 78) {
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61 putchar(' ');
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62 linelen++;
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63 } else {
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64 fputs(" \\\n\t", stdout);
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65 linelen = 8;
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66 if (extra_indent) {
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67 fputs(" ", stdout);
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68 linelen += 4;
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69 }
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70 }
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71 fputs(*ap, stdout);
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72 linelen += strlen(*ap);
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73 }
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74 putchar('\n');
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75 exit(0);
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76 }