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-rw-r--r--src/slibc-human/humansize.c53
1 files changed, 35 insertions, 18 deletions
diff --git a/src/slibc-human/humansize.c b/src/slibc-human/humansize.c
index 4bc94db..8bde63e 100644
--- a/src/slibc-human/humansize.c
+++ b/src/slibc-human/humansize.c
@@ -18,6 +18,7 @@
#include <slib-human.h>
#include <stdlib.h>
#include <string.h>
+#include <alloca.h>
#include <errno.h>
@@ -25,35 +26,46 @@
/**
* Convert a file size of file offset from machine representation to human representation.
*
- * @param buffer A buffer than shall be used if it is sufficiently large.
- * @param bufsize The allocation size of `buffer`.
- * Must be 0 if and only if `buffer` is `NULL`.
- * @param size The value to convert.
- * @param mode Representation style, 0 for default.
- * @param detail See documentation for the select value on `mode`.
- * @param point The symbol to use for decimal points. `NULL` or empty for default.
- * @return Human representation of the file size/offset, `NULL` on error.
- * On success, the caller is responsible for deallocating the
- * returned pointer, if and only if it is not `buffer`.
+ * @param buffer A buffer than shall be used if it is sufficiently large.
+ * @param bufsize The allocation size of `buffer`.
+ * Must be 0 if and only if `buffer` is `NULL`.
+ * @param size The value to convert.
+ * @param mode Representation style, 0 for default.
+ * @param detail See documentation for the select value on `mode`.
+ * @param point The symbol to use for decimal points. `NULL` or empty for default.
+ * @param intraspacing Spacing between values and units. `NULL` or empty for none.
+ * This value should depend on language and context. For English
+ * this value should be "" or "-", but in for example Swedish it
+ * should always be " ". Hence this value is a string rather than
+ * a booleanic integer.
+ * @return Human representation of the file size/offset, `NULL` on error.
+ * On success, the caller is responsible for deallocating the
+ * returned pointer, if and only if it is not `buffer`.
*
* @throws EINVAL If `mode` is invalid.
* @throws ENOMEM The process cannot allocate more memory.
*/
-char* humansize(char* buffer, size_t bufsize, size_t size,
- enum humansize_mode mode, int detail, const char* restrict point)
+char* humansize(char* buffer, size_t bufsize, size_t size, enum humansize_mode mode,
+ int detail, const char* restrict point, const char* restrict intraspacing)
{
+#if (__LONG_LONG_BIT > 90) && (((__LONG_LONG_BIT - 90) * 3 + 7) / 8 + 3 > 7)
+# define BUFFER_SIZE (((__LONG_LONG_BIT - 90) * 3 + 7) / 8 + 3)
+#else
+# define BUFFER_SIZE 7
+#endif
+
char prefixes[] = { '\0', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y' };
size_t values[sizeof(prefixes) / sizeof(*prefixes)] = { 0 };
size_t div, i, n = 0, words = 0;
char* p;
char* new = NULL;
-#if (__LONG_LONG_BIT > 90) && (((__LONG_LONG_BIT - 90) * 3 + 7) / 8 + 3 > 7)
- char buf[((__LONG_LONG_BIT - 90) * 3 + 7) / 8 + 3];
-#else
- char buf[7];
-#endif
+ char* buf;
int m, saved_errno;
+ if (intraspacing == NULL)
+ intraspacing = "";
+ buf = alloca((BUFFER_SIZE + strlen(intraspacing)) * sizeof(char));
+
switch (mode & 7)
{
case 0:
@@ -84,7 +96,7 @@ char* humansize(char* buffer, size_t bufsize, size_t size,
{
if (!(values[i] || (!i && !n)))
break;
- if (m = sprintf(buf, "%zu", values[i]), m < 0)
+ if (m = sprintf(buf, "%zu%s", values[i], intraspacing), m < 0)
goto fail;
if (i == 0)
buf[m++] = 'B';
@@ -165,6 +177,11 @@ char* humansize(char* buffer, size_t bufsize, size_t size,
}
}
}
+ if (*intraspacing)
+ {
+ memcpy(buffer + n, intraspacing, strlen(intraspacing) * sizeof(char));
+ m += strlen(intraspacing);
+ }
if (i == 0)
buffer[n++] = 'B';
else