1 files changed, 73 insertions, 0 deletions
diff --git a/app/wlib/mswlib/getline/getline.c b/app/wlib/mswlib/getline/getline.c
new file mode 100644
index 0000000..202c7e2
--- /dev/null
+++ b/app/wlib/mswlib/getline/getline.c
@@ -0,0 +1,73 @@
+#include "getline.h"
+
+#include <stdlib.h>
+#include <errno.h>
+
+// MSVC specific implementation
+static void fseterr(FILE *fp)
+{
+    struct file { // Undocumented implementation detail
+        unsigned char *_ptr;
+        unsigned char *_base;
+        int _cnt;
+        int _flag;
+        int _file;
+        int _charbuf;
+        int _bufsiz;
+    };
+    #define _IOERR 0x10
+
+    ((struct file *)fp)->_flag |= _IOERR;
+}
+
+ssize_t getdelim(char **restrict lineptr, size_t *restrict n, int delim, FILE *restrict stream)
+{
+    if (lineptr == NULL || n == NULL || stream == NULL || (*lineptr == NULL && *n != 0)) {
+        errno = EINVAL;
+        return -1;
+    }
+    if (feof(stream) || ferror(stream)) {
+        return -1;
+    }
+
+    if (*lineptr == NULL) {
+        *n = 256;
+        *lineptr = malloc(*n);
+        if (*lineptr == NULL) {
+            fseterr(stream);
+            errno = ENOMEM;
+            return -1;
+        }
+    }
+    ssize_t nread = 0;
+    int c = EOF;
+    while (c != delim) {
+        c = fgetc(stream);
+        if (c == EOF) {
+            break;
+        }
+        if (nread >= (ssize_t)(*n - 1)) {
+            size_t newn = *n * 2;
+            char *newptr = realloc(*lineptr, newn);
+            if (newptr == NULL) {
+                fseterr(stream);
+                errno = ENOMEM;
+                return -1;
+            }
+            *lineptr = newptr;
+            *n = newn;
+        }
+        (*lineptr)[nread++] = c;
+    }
+    if (c == EOF && nread == 0) {
+        return -1;
+    }
+    (*lineptr)[nread] = 0;
+    return nread;
+}
+
+ssize_t getline(char **restrict lineptr, size_t *restrict n, FILE *restrict stream)
+{
+    return getdelim(lineptr, n, '\n', stream);
+}
+