94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
// 19 april 2019
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// TODO get rid of the need for this (it temporarily silences noise so I can find actual build issues)
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#ifdef _MSC_VER
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include "ui.h"
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#include "uipriv.h"
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static int initialized = 0;
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#define errAlreadyInitialized "libui already initialized"
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#define errOptionsMustBeNULL "options parameter to uiInit() must be NULL"
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static const char *commonInitErrors[] = {
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errAlreadyInitialized,
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errOptionsMustBeNULL,
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NULL,
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};
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static int checkInitErrorLengths(uiInitError *err, const char **initErrors)
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{
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const char **p;
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if (initErrors == NULL)
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return 1;
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for (p = initErrors; *p != NULL; p++)
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if (strlen(*p) > 255) {
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strcpy(err->Message, "[INTERNAL] uiInit() error too long: ");
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strncat(err->Message, *p, 32);
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strcat(err->Message, "...");
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return 0;
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}
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return 1;
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}
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int uiInit(void *options, uiInitError *err)
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{
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if (err == NULL)
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return 0;
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if (err->Size != sizeof (uiInitError))
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return 0;
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if (!checkInitErrorLengths(err, commonInitErrors))
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return 0;
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if (!checkInitErrorLengths(err, uiprivSysInitErrors()))
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return 0;
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if (initialized)
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return uiprivInitReturnError(err, errAlreadyInitialized);
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if (options != NULL)
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return uiprivInitReturnError(err, errOptionsMustBeNULL);
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if (!uiprivSysInit(options, err))
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return 0;
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initialized = 1;
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return 1;
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}
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int uiprivInitReturnError(uiInitError *err, const char *msg)
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{
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// checkInitErrorLengths() above ensures that err->Message[255] will always be '\0'
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strncpy(err->Message, msg, 256);
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return 0;
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}
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int uiprivInitReturnErrorf(uiInitError *err, const char *msg, ...)
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{
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va_list ap;
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// checkInitErrorLengths() above ensures that err->Message[255] will always be '\0' assuming the formatted string in msg passed to checkInitErrorLengths() is valid
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va_start(ap, msg);
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vsnprintf(err->Message, 256, msg, ap);
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va_end(ap);
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return 0;
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}
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bool uiprivCheckInitializedAndThreadImpl(const char *func)
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{
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// While it does seem risky to not lock this, if this changes during the execution of this function it means only that it was changed from a different thread, and since it can only change from false to true, an error will be reported anyway.
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if (!initialized) {
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uiprivProgrammerError(uiprivProgrammerErrorNotInitialized, func);
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return false;
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}
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if (!uiprivSysCheckThread()) {
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uiprivProgrammerError(uiprivProgrammerErrorWrongThread, func);
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return false;
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}
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return true;
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}
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