+static void TestLineCount(const char *prefixLine, const char *line, int32_t numRepititions) {
+ UChar buffer[64];
+ UChar expectedBuffer[64];
+ int32_t lineLen = strlen(line);
+ UChar *returnedUCharBuffer;
+ int32_t repetitions;
+ UFILE *myFile = NULL;
+ FILE *stdFile = fopen(STANDARD_TEST_FILE, "wb");
+
+ if (stdFile == NULL) {
+ log_err("Can't write test file.\n");
+ return;
+ }
+ /* Write a prefix line and then write a bunch of lines */
+ fwrite(prefixLine, strlen(prefixLine), 1, stdFile);
+ for (repetitions = 0; repetitions < numRepititions; repetitions++) {
+ fwrite(line, lineLen, 1, stdFile);
+ }
+ fclose(stdFile);
+
+ myFile = u_fopen(STANDARD_TEST_FILE, "rb", NULL, NULL);
+ if (myFile == NULL) {
+ log_err("Can't read test file.\n");
+ return;
+ }
+
+ /* Read the prefix line. This can make sure that a Windows newline is either on a boundary or before it. */
+ u_uastrncpy(expectedBuffer, prefixLine, (int32_t)strlen(prefixLine)+1);
+ returnedUCharBuffer = u_fgets(buffer, sizeof(buffer)/sizeof(buffer[0]), myFile);
+ if (u_strcmp(returnedUCharBuffer, expectedBuffer) != 0) {
+ log_err("prefix buffer is different. prefix=\"%s\"\n", prefixLine);
+ return;
+ }
+
+ u_uastrncpy(expectedBuffer, line, (int32_t)strlen(line)+1);
+ for (repetitions = 0; ; repetitions++) {
+ u_memset(buffer, 0xBEEF, sizeof(buffer)/sizeof(buffer[0]));
+ returnedUCharBuffer = u_fgets(buffer, sizeof(buffer)/sizeof(buffer[0]), myFile);
+
+ if (!returnedUCharBuffer) {
+ /* returned NULL. stop. */
+ break;
+ }
+ if (u_strcmp(buffer, expectedBuffer) != 0) {
+ log_err("buffers are different at count %d\n", repetitions);
+ }
+ if (buffer[u_strlen(buffer)+1] != 0xBEEF) {
+ log_err("u_fgets wrote too much\n");
+ }
+ }
+ if (repetitions != numRepititions) {
+ log_err("got wrong number of lines. got=%d expected=%d\n", repetitions, numRepititions);
+ }
+ u_fclose(myFile);
+}
+
+static void TestfgetsNewLineCount(void) {
+ /* This makes sure that lines are correctly handled between buffer boundaries. */
+ TestLineCount("\n", "\n", 1024); /* Unix newlines */
+ TestLineCount("\r\n", "\r\n", 1024);/* Windows newlines */
+ TestLineCount("a\r\n", "\r\n", 1024);/* Windows newlines offset by 1 byte */
+ TestLineCount("\r\n", "a\r\n", 1024);/* Windows newlines offset with data */
+ TestLineCount("\n", "a\n", 1024); /* Unix newlines offset with data */
+ TestLineCount("\n", "\r\n", 1024); /* a mixed number of lines. */
+}
+
+static void TestFgetsLineBuffering(void) {
+ UChar buffer[2003]; /* Use a non-power of 2 or 10 */
+ UChar *returnedUCharBuffer;
+ int32_t repetitions;
+ UFILE *myFile = NULL;
+ FILE *stdFile = fopen(STANDARD_TEST_FILE, "wb");
+
+ if (stdFile == NULL) {
+ log_err("Can't write test file.\n");
+ return;
+ }
+ u_memset(buffer, 0xBEEF, sizeof(buffer)/sizeof(buffer[0]));
+
+ /* Write one very long line */
+ for (repetitions = 0; repetitions < ((sizeof(buffer)/sizeof(buffer[0]))*2); repetitions++) {
+ fwrite(repetitions ? "1" : "2", 1, 1, stdFile);
+ }
+ fclose(stdFile);
+
+ myFile = u_fopen(STANDARD_TEST_FILE, "rb", NULL, NULL);
+ if (myFile == NULL) {
+ log_err("Can't read test file.\n");
+ return;
+ }
+
+ /* Read part of one very long line */
+ returnedUCharBuffer = u_fgets(buffer, (sizeof(buffer)/sizeof(buffer[0]))-1, myFile);
+ if (u_strlen(returnedUCharBuffer) != ((sizeof(buffer)/sizeof(buffer[0]))-2)) {
+ log_err("Line is wrong length. Got %d. Expected %d.\n",
+ u_strlen(returnedUCharBuffer), ((sizeof(buffer)/sizeof(buffer[0]))-2));
+ }
+ /* We better not read too much */
+ if (buffer[(sizeof(buffer)/sizeof(buffer[0]))-1] != 0xBEEF) {
+ log_err("Too much data was written\n");
+ }
+
+ u_fclose(myFile);
+}
+
projects / apple / icu.git / blobdiff