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-rw-r--r--i/pc104/initrd/conf/busybox/coreutils/printf.c313
1 files changed, 313 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/coreutils/printf.c b/i/pc104/initrd/conf/busybox/coreutils/printf.c
new file mode 100644
index 0000000..a2a82d2
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/coreutils/printf.c
@@ -0,0 +1,313 @@
+/* vi: set sw=4 ts=4: */
+/* printf - format and print data
+
+ Copyright 1999 Dave Cinege
+ Portions copyright (C) 1990-1996 Free Software Foundation, Inc.
+
+ Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
+*/
+
+/* Usage: printf format [argument...]
+
+ A front end to the printf function that lets it be used from the shell.
+
+ Backslash escapes:
+
+ \" = double quote
+ \\ = backslash
+ \a = alert (bell)
+ \b = backspace
+ \c = produce no further output
+ \f = form feed
+ \n = new line
+ \r = carriage return
+ \t = horizontal tab
+ \v = vertical tab
+ \0ooo = octal number (ooo is 0 to 3 digits)
+ \xhhh = hexadecimal number (hhh is 1 to 3 digits)
+
+ Additional directive:
+
+ %b = print an argument string, interpreting backslash escapes
+
+ The 'format' argument is re-used as many times as necessary
+ to convert all of the given arguments.
+
+ David MacKenzie <djm@gnu.ai.mit.edu> */
+
+
+// 19990508 Busy Boxed! Dave Cinege
+
+#include "busybox.h"
+
+typedef void (*converter)(const char *arg, void *result);
+
+static void multiconvert(const char *arg, void *result, converter convert)
+{
+ char s[sizeof(int)*3 + 2];
+
+ if (*arg == '"' || *arg == '\'') {
+ sprintf(s, "%d", (unsigned char)arg[1]);
+ arg = s;
+ }
+ convert(arg, result);
+ /* if there was conversion error, print unconverted string */
+ if (errno)
+ fputs(arg, stderr);
+}
+
+static void conv_strtoul(const char *arg, void *result)
+{
+ *(unsigned long*)result = bb_strtoul(arg, NULL, 0);
+}
+static void conv_strtol(const char *arg, void *result)
+{
+ *(long*)result = bb_strtol(arg, NULL, 0);
+}
+static void conv_strtod(const char *arg, void *result)
+{
+ char *end;
+ /* Well, this one allows leading whitespace... so what */
+ /* What I like much less is that "-" is accepted too! :( */
+ *(double*)result = strtod(arg, &end);
+ if (end[0]) errno = ERANGE;
+}
+
+static unsigned long my_xstrtoul(const char *arg)
+{
+ unsigned long result;
+ multiconvert(arg, &result, conv_strtoul);
+ return result;
+}
+
+static long my_xstrtol(const char *arg)
+{
+ long result;
+ multiconvert(arg, &result, conv_strtol);
+ return result;
+}
+
+static double my_xstrtod(const char *arg)
+{
+ double result;
+ multiconvert(arg, &result, conv_strtod);
+ return result;
+}
+
+static void print_esc_string(char *str)
+{
+ for (; *str; str++) {
+ if (*str == '\\') {
+ str++;
+ putchar(bb_process_escape_sequence((const char **)&str));
+ } else {
+ putchar(*str);
+ }
+
+ }
+}
+
+static void print_direc(char *start, size_t length, int field_width, int precision,
+ const char *argument)
+{
+ char *p; /* Null-terminated copy of % directive. */
+
+ p = xmalloc((unsigned) (length + 1));
+ strncpy(p, start, length);
+ p[length] = 0;
+
+ switch (p[length - 1]) {
+ case 'd':
+ case 'i':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, my_xstrtol(argument));
+ else
+ printf(p, precision, my_xstrtol(argument));
+ } else {
+ if (precision < 0)
+ printf(p, field_width, my_xstrtol(argument));
+ else
+ printf(p, field_width, precision, my_xstrtol(argument));
+ }
+ break;
+ case 'o':
+ case 'u':
+ case 'x':
+ case 'X':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, my_xstrtoul(argument));
+ else
+ printf(p, precision, my_xstrtoul(argument));
+ } else {
+ if (precision < 0)
+ printf(p, field_width, my_xstrtoul(argument));
+ else
+ printf(p, field_width, precision, my_xstrtoul(argument));
+ }
+ break;
+ case 'f':
+ case 'e':
+ case 'E':
+ case 'g':
+ case 'G':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, my_xstrtod(argument));
+ else
+ printf(p, precision, my_xstrtod(argument));
+ } else {
+ if (precision < 0)
+ printf(p, field_width, my_xstrtod(argument));
+ else
+ printf(p, field_width, precision, my_xstrtod(argument));
+ }
+ break;
+ case 'c':
+ printf(p, *argument);
+ break;
+ case 's':
+ if (field_width < 0) {
+ if (precision < 0)
+ printf(p, argument);
+ else
+ printf(p, precision, argument);
+ } else {
+ if (precision < 0)
+ printf(p, field_width, argument);
+ else
+ printf(p, field_width, precision, argument);
+ }
+ break;
+ }
+
+ free(p);
+}
+
+/* Print the text in FORMAT, using ARGV (with ARGC elements) for
+ arguments to any '%' directives.
+ Return the number of elements of ARGV used. */
+
+static int print_formatted(char *format, int argc, char **argv)
+{
+ int save_argc = argc; /* Preserve original value. */
+ char *f; /* Pointer into 'format'. */
+ char *direc_start; /* Start of % directive. */
+ size_t direc_length; /* Length of % directive. */
+ int field_width; /* Arg to first '*', or -1 if none. */
+ int precision; /* Arg to second '*', or -1 if none. */
+
+ for (f = format; *f; ++f) {
+ switch (*f) {
+ case '%':
+ direc_start = f++;
+ direc_length = 1;
+ field_width = precision = -1;
+ if (*f == '%') {
+ putchar('%');
+ break;
+ }
+ if (*f == 'b') {
+ if (argc > 0) {
+ print_esc_string(*argv);
+ ++argv;
+ --argc;
+ }
+ break;
+ }
+ if (strchr("-+ #", *f)) {
+ ++f;
+ ++direc_length;
+ }
+ if (*f == '*') {
+ ++f;
+ ++direc_length;
+ if (argc > 0) {
+ field_width = my_xstrtoul(*argv);
+ ++argv;
+ --argc;
+ } else
+ field_width = 0;
+ } else {
+ while (isdigit(*f)) {
+ ++f;
+ ++direc_length;
+ }
+ }
+ if (*f == '.') {
+ ++f;
+ ++direc_length;
+ if (*f == '*') {
+ ++f;
+ ++direc_length;
+ if (argc > 0) {
+ precision = my_xstrtoul(*argv);
+ ++argv;
+ --argc;
+ } else
+ precision = 0;
+ } else
+ while (isdigit(*f)) {
+ ++f;
+ ++direc_length;
+ }
+ }
+ if (*f == 'l' || *f == 'L' || *f == 'h') {
+ ++f;
+ ++direc_length;
+ }
+ /*
+ if (!strchr ("diouxXfeEgGcs", *f))
+ fprintf(stderr, "%%%c: invalid directive", *f);
+ */
+ ++direc_length;
+ if (argc > 0) {
+ print_direc(direc_start, direc_length, field_width,
+ precision, *argv);
+ ++argv;
+ --argc;
+ } else
+ print_direc(direc_start, direc_length, field_width,
+ precision, "");
+ break;
+ case '\\':
+ if (*++f == 'c')
+ exit(0);
+ putchar(bb_process_escape_sequence((const char **)&f));
+ f--;
+ break;
+ default:
+ putchar(*f);
+ }
+ }
+
+ return save_argc - argc;
+}
+
+int printf_main(int argc, char **argv);
+int printf_main(int argc, char **argv)
+{
+ char *format;
+ int args_used;
+
+ if (argc <= 1 || argv[1][0] == '-') {
+ bb_show_usage();
+ }
+
+ format = argv[1];
+ argc -= 2;
+ argv += 2;
+
+ do {
+ args_used = print_formatted(format, argc, argv);
+ argc -= args_used;
+ argv += args_used;
+ } while (args_used > 0 && argc > 0);
+
+/* if (argc > 0)
+ fprintf(stderr, "excess args ignored");
+*/
+
+ return EXIT_SUCCESS;
+}