FreeCalypso > hg > freecalypso-sw

annotate lcdemu/xrm.c @ 1034:405b5469abc4 default tip

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top README: repository change notice
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 12 Jun 2016 19:06:34 +0000
parents 312778104f54
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
903
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1 /*
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2 * LCDemu based on HECterm by the same author
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3 * Xrm functions
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <X11/Xlib.h>
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11 #include <X11/Xresource.h>
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12 #include <X11/Xutil.h>
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13 #include "globals.h"
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14
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15 static char appdefaults_pathname[] =
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16 "/usr/local/share/freecalypso/lcdemu-defaults";
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17
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18 load_resources()
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19 {
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20 xrmquark_topclass = XrmStringToQuark("LCDemu");
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21 xrmquark_topinstance = XrmStringToQuark(proginstancename);
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22 xrmdb_defaults = XrmGetFileDatabase(appdefaults_pathname);
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23 xrmdb_displayres =
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24 XrmGetStringDatabase(XResourceManagerString(mydisplay));
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25 }
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26
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27 /*
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28 * The following function looks up a resource in all of our databases
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29 * and returns a pointer (char *) to the value in a malloced buffer that
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30 * can be freed when it is no longer needed. My reading of X11R4
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31 * documentation indicates that resource values returned from Xrm functions
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32 * are not necessarily NUL-terminated (no claim is made that they are
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33 * and XrmValue structure has a size field), which is why I copy to
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34 * my own buffer and NUL-terminate it there.
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35 *
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36 * Returns NULL pointer if not found in any of the databases.
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37 */
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38 char *
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39 xrm_lookup(instquarks, classquarks)
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40 XrmQuark *instquarks, *classquarks;
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41 {
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42 XrmRepresentation reptype;
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43 XrmValue value;
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44 register char *buf;
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45
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46 if (XrmQGetResource(xrmdb_cmdline, instquarks, classquarks, &reptype,
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47 &value))
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48 goto found;
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49 if (XrmQGetResource(xrmdb_displayres, instquarks, classquarks, &reptype,
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50 &value))
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51 goto found;
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52 if (XrmQGetResource(xrmdb_defaults, instquarks, classquarks, &reptype,
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53 &value))
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54 goto found;
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55 return(NULL);
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56 found: buf = malloc(value.size + 1);
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57 if (!buf) {
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58 perror("malloc");
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59 exit(1);
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60 }
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61 bcopy(value.addr, buf, value.size);
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62 buf[value.size] = '\0';
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63 return(buf);
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64 }
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65
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66 parse_boolean_resource(str)
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67 register char *str;
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68 {
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69 if (!strcasecmp(str, "on") || !strcasecmp(str, "true") ||
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70 !strcasecmp(str, "yes"))
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71 return(1);
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72 if (!strcasecmp(str, "off") || !strcasecmp(str, "false") ||
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73 !strcasecmp(str, "no"))
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74 return(0);
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75 return(atoi(str));
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76 }
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77
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78 get_boolean_resource(resource, def)
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79 char *resource;
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80 int def;
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81 {
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82 XrmQuark instquarks[3], classquarks[3];
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83 register char *cp;
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84 register int i;
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85
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86 instquarks[0] = xrmquark_topinstance;
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87 classquarks[0] = xrmquark_topclass;
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88 classquarks[1] = instquarks[1] = XrmStringToQuark(resource);
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89 instquarks[2] = classquarks[2] = NULLQUARK;
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90 cp = xrm_lookup(instquarks, classquarks);
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91 if (cp) {
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92 i = parse_boolean_resource(cp);
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93 free(cp);
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94 } else
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95 i = def;
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96 return(i);
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97 }