--- /dev/null
+/*
+** scanf-test.c
+**
+** Tests that the scanf family of functions scans and converts its input data
+** correctly.
+**
+** Note: When this program uses conio, it doesn't guard against printing off
+** the bottom of the screen. So, you might have a problem on platforms with
+** "short" screens.
+**
+** 2005-01-26, Greg King
+*/
+
+/* Define USE_STDIO, when you want to use the stdio functions.
+** Do not define it, when you want to use the conio functions.
+*/
+/*
+#define USE_STDIO
+*/
+
+#include <stdio.h>
+#include <string.h>
+
+#ifdef USE_STDIO
+# define SCANF scanf
+# define PRINTF printf
+
+#else
+# include <conio.h>
+
+/* Unlike other conio input functions, cscanf() echoes what you type. */
+# define SCANF cscanf
+# define PRINTF cprintf
+#endif
+
+#define ARRAYSIZE(a) (sizeof (a) / sizeof (a)[0])
+
+static const struct {
+ const char *input, *format;
+ int rvalue;
+ enum TYPE {
+ INT,
+ CHAR
+ } type1;
+ union {
+ int nvalue;
+ const char *svalue;
+ } v1;
+ enum TYPE type2;
+ union {
+ int nvalue;
+ const char *svalue;
+ } v2;
+ } test_data[] = {
+/* Input sequences for character specifiers must be less than 80 characters
+** long. These format strings are allowwed a maximum of two assignment
+** specifications.
+*/
+ /* Test that literals match, and that they aren't seen as conversions.
+ ** Test that integer specifiers can handle end-of-file.
+ */
+ {"qwerty Dvorak", "qwerty Dvorak", 0 , INT, {0}, INT, {0}},
+ {"qwerty" , "qwerty %d%i" , EOF, INT, {0}, INT, {0}},
+ {"qwerty " , "qwerty %d%i" , EOF, INT, {0}, INT, {0}},
+
+ /* Test that integer specifiers scan properly. */
+ {"qwerty a" , "qwerty %d%i", 0, INT, {0} , INT, {0}},
+ {"qwerty -" , "qwerty %d%i", 0, INT, {0} , INT, {0}},
+ {"qwerty -9" , "qwerty %d%i", 1, INT, {-9} , INT, {0}},
+ {"qwerty -95" , "qwerty %d%i", 1, INT, {-95} , INT, {0}},
+ {"qwerty -95a" , "qwerty %d%i", 1, INT, {-95} , INT, {0}},
+ {"qwerty -95a 1", "qwerty %d%i", 1, INT, {-95} , INT, {0}},
+ {"qwerty -a" , "qwerty %d%i", 0, INT, {0} , INT, {0}},
+ {"qwerty -95 1" , "qwerty %d%i", 2, INT, {-95} , INT, {1}},
+ {"qwerty 95 2", "qwerty %i" , 1, INT, {95} , INT, {0}},
+ {"qwerty -95 +2", "qwerty %x%o", 2, INT, {-0x95}, INT, {02}},
+ {"qwerty 0X9E 02", "qwerty %i%i", 2, INT, {0x9e} , INT, {2}},
+ {"qwerty 095 2", "qwerty %i%i", 2, INT, {0} , INT, {95}},
+ {"qwerty 0e5 2", "qwerty %i%i", 1, INT, {0} , INT, {0}},
+
+ /* (String pointers are cast as (int),
+ * in order to avoid cc65 warnings.) */
+
+ /* Test that character specifiers can handle end-of-file. */
+ {"qwerty" , "qwerty %s%s" , EOF, CHAR, {(int)""}, CHAR, {(int)""}},
+ {"qwerty ", "qwerty %s%s" , EOF, CHAR, {(int)""}, CHAR, {(int)""}},
+ {"qwerty" , "qwerty %c%c" , EOF, CHAR, {(int)""}, CHAR, {(int)""}},
+ {"qwerty ", "qwerty %c%c" , EOF, CHAR, {(int)""}, CHAR, {(int)""}},
+ {"qwerty" , "qwerty %[ a-z]%c", EOF, CHAR, {(int)""}, CHAR, {(int)""}},
+ {"qwerty ", "qwerty %[ a-z]%c", EOF, CHAR, {(int)""}, CHAR, {(int)""}},
+ {"qwerty ", "qwerty%s%s" , EOF, CHAR, {(int)""}, CHAR, {(int)""}},
+
+ /* Test that character specifiers scan properly. */
+ {"123456qwertyasdfghzxcvbn!@#$%^QWERTYASDFGHZXCV"
+ "BN7890-=uiop[]\\jkl;'m,./&*()_+UIOP{}|JKL:\"M<>?",
+ "%79s%79s", 2,
+ CHAR, {(int)"123456qwertyasdfghzxcvbn!@#$%^QWERTYASDFGHZXCV"
+ "BN7890-=uiop[]\\jkl;'m,./&*()_+UIO"}, CHAR, {(int)"P{}|JKL:\"M<>?"}},
+ {"qwerty ", "qwerty%c%c" , 2, CHAR, {(int)" "} , CHAR, {(int)" "}},
+ {"qwerty ", "qwerty%2c%c" , 2, CHAR, {(int)" "} , CHAR, {(int)" "}},
+ {"qwerty ", "qwerty%2c%2c" , 1, CHAR, {(int)" "} , CHAR, {(int)" "}},
+ {"qwerty ", "qwerty%[ a-z]%c", 1, CHAR, {(int)" "}, CHAR, {(int)""}},
+ {"qwerty q", "qwerty%[ a-z]%c", 1, CHAR, {(int)" q"}, CHAR, {(int)""}},
+ {"qwerty Q", "qwerty%[ a-z]%c", 2, CHAR, {(int)" "}, CHAR, {(int)"Q"}},
+ {"qwerty-QWERTY-", "%[q-ze-]%[-A-Z]" , 2, CHAR, {(int)"qwerty-"},
+ CHAR, {(int)"QWERTY-"}},
+
+ /* Test the space-separation of strings. */
+ {"qwerty qwerty" , "qwerty%s%s", 1, CHAR, {(int)"qwerty"},
+ CHAR, {(int)""}},
+ {"qwerty qwerty Dvorak", "qwerty%s%s", 2, CHAR, {(int)"qwerty"},
+ CHAR, {(int)"Dvorak"}},
+
+ /* Test the mixxing of types. */
+ {"qwerty abc3", "qwerty%s%X" , 1, CHAR, {(int)"abc3"} , INT , {0}},
+ {"qwerty abc3", "qwerty%[ a-z]%X" , 2, CHAR, {(int)" abc"} , INT , {3}},
+ {"qwerty abc3", "qwerty%[ a-z3]%X", 1, CHAR, {(int)" abc3"}, INT , {0}},
+ {"qwerty abc3", "qwerty%[ A-Z]%X" , 2, CHAR, {(int)" "} , INT ,
+ {0xabc3}},
+ {"qwerty 3abc", "qwerty%i%[ a-z]" , 2, INT , {3} , CHAR,
+ {(int)"abc"}},
+ {"qwerty 3abc", "qwerty%i%[ A-Z]" , 1, INT , {3} , CHAR,
+ {(int)""}},
+
+ /* Test the character-count specifier. */
+ {" 95 5", "%n%i" , 1, INT , {0} , INT, {95}},
+ {" a5 5", "%n%i" , 0, INT , {0} , INT, {0}},
+ {" a5 5", "%x%n" , 1, INT , {0xa5} , INT, {4}},
+ {" a5 5", " %4c%n", 1, CHAR, {(int)"a5 5"}, INT, {6}},
+ {" 05a9" , "%i%n" , 1, INT , {5} , INT, {3}},
+
+ /* Test assignment-suppression. */
+ {" 95 6", "%n%*i" , 0, INT , {0} , INT, {0}},
+ {" a5 6", "%*x%n" , 0, INT , {4} , INT, {0}},
+ {" a5 6", "%*x%n%o", 1, INT , {4} , INT, {6}},
+ {" a5 6", " %*4c%d", 0, CHAR, {(int)""}, INT, {0}},
+ {"The first number is 7. The second number is 8.\n",
+ "%*[ .A-Za-z]%d%*[ .A-Za-z]%d", 2, INT, {7}, INT, {8}},
+ };
+
+/* Test the char, short, and long specification-modifiers. */
+static const struct {
+ const char *input, *format;
+ long value;
+ } type_data[] = {
+ {"+123456789", "%hhd", (signed char)123456789L},
+ {" 123456789", "%hd" , (unsigned short)123456789L},
+ {" 123456789", "%ld" , 123456789L},
+ {"-123456789", "%lld", -123456789L},
+ };
+
+static void Pause(void) {
+#ifdef USE_STDIO
+ printf("\n");
+#else
+ cprintf("\r\nTap a key to see the next test. ");
+ cgetc();
+ clrscr();
+#endif
+ }
+
+int main(void) {
+ long n0;
+ unsigned t;
+ int c, n1 = 12345, n2, n3;
+ char s1[80], s2[80];
+ void *p1 = main, *p2 = main, *p3 = main, *p4 = main;
+
+#ifndef USE_STDIO
+ clrscr();
+ cursor(1);
+#endif
+
+ /* Test that scanf() can recognize percent-signs in the input.
+ ** Test that integer converters skip white-space.
+ ** Test that "%i" can scan a single zero digit (followed by EOF).
+ */
+ sscanf("% \r\n\f\v\t 0", "%%%i", &n1);
+ if (n1 != 0)
+ PRINTF("sscanf()'s \"%%%%%%i\" couldn't scan either a \"%%\" "
+ "or a single zero digit.\r\n\n");
+
+ /* Test scanf()'s return-value: EOF if input ends before the first
+ ** conversion-attempt begins; an assignment-count, otherwise.
+ ** Test that scanf() properly converts and assigns the correct number
+ ** of arguments.
+ */
+ PRINTF("Testing scanf()'s return-value,\r\nconversions, and assignments...\r\n");
+ for (t = 0; t < ARRAYSIZE(test_data); ++t) {
+
+ /* Prefill the arguments with zeroes. */
+ n1 = n2 = 0;
+ memset(s1, '\0', sizeof s1);
+ memset(s2, '\0', sizeof s2);
+
+ c=sscanf(test_data[t].input, test_data[t].format,
+ /* Avoid warning messages about different
+ ** pointer-types, by casting them to void-pointers.
+ */
+ test_data[t].type1 == INT ? (void *)&n1 : (void *)s1,
+ test_data[t].type2 == INT ? (void *)&n2 : (void *)s2);
+ if (c != test_data[t].rvalue)
+ PRINTF("Test #%u returned %d instead of %d.\r\n",
+ t + 1, c, test_data[t].rvalue);
+
+ if (test_data[t].type1 == INT) {
+ if (test_data[t].v1.nvalue != n1)
+ PRINTF("Test #%u assigned %i, instead of %i,\r\n"
+ "\tto the first argument.\r\n\n",
+ t + 1, n1, test_data[t].v1.nvalue);
+ }
+ else { /* test_data[t].type1 == CHAR */
+ if (strcmp(test_data[t].v1.svalue, s1))
+ PRINTF("Test #%u assigned\r\n\"%s\",\r\n"
+ "\tinstead of\r\n\"%s\",\r\n"
+ "\tto the first argument.\r\n\n",
+ t + 1, s1, test_data[t].v1.svalue);
+ }
+
+ if (test_data[t].type2 == INT) {
+ if (test_data[t].v2.nvalue != n2)
+ PRINTF("Test #%u assigned %i, instead of %i,\r\n"
+ "\tto the second argument.\r\n\n",
+ t + 1, n2, test_data[t].v2.nvalue);
+ }
+ else { /* test_data[t].type2 == CHAR */
+ if (strcmp(test_data[t].v2.svalue, s2))
+ PRINTF("Test #%u assigned\r\n\"%s\",\r\n"
+ "\tinstead of\r\n\"%s\",\r\n"
+ "\tto the second argument.\r\n\n",
+ t + 1, s2, test_data[t].v2.svalue);
+ }
+ }
+ Pause();
+
+ /* Test the char, short, and long specification-modifiers. */
+ PRINTF("Testing scanf()'s type-modifiers...\r\n");
+ for (t = 0; t < ARRAYSIZE(type_data); ++t) {
+ n0 = 0L;
+ sscanf(type_data[t].input, type_data[t].format, &n0);
+ if (type_data[t].value != n0)
+ PRINTF("Test #%u assigned %li instead of %li.\r\n",
+ t + 1, n0, type_data[t].value);
+ }
+ Pause();
+
+ /* Test that the pointer specification
+ ** can convert what printf() generates.
+ */
+ PRINTF("Testing \"%%p\"...\r\n");
+ sprintf(s1, "%p %p %p %p", NULL, NULL,
+ Pause, /* static (program) storage */
+ &c); /* automatic (stack) storage */
+ sscanf(s1, "%p%p%p %p", &p1, &p2, &p3, &p4);
+ if (p1 != NULL || p2 != NULL ||
+ p3 != (void *)Pause || p4 != (void *)&c)
+ PRINTF("p1 is %p, p2 is %p; they should be %p.\r\n"
+ "scanf() assigned %p to p3, instead of %p.\r\n"
+ "scanf() assigned %p to p4, instead of %p.\r\n",
+ p1, p2, NULL,
+ p3, Pause,
+ p4, &c);
+
+ /* Test that scanf() can scan typed input.
+ ** Retest that "%i" can decode radix prefixxes.
+ */
+ do {
+ Pause();
+ PRINTF("Type 3 signed numbers,\r\n"
+ "separated by white-space:\r\n"
+ "octal decimal hexadecimal\r\n"
+ "? ");
+ c = SCANF("%i %i %i", &n1, &n2, &n3);
+ PRINTF("\r\n\nscanf() returned %i.\r\n"
+ "The numbers are:\r\n"
+ " %+o octal,\r\n"
+ " %+d decimal,\r\n"
+ " %+#X hexadecimal.\r\n",
+ c, n1, n2, n3);
+ } while (c > 0);
+ return 0;
+ }
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