diff -r aac257b77842 -r 02f36c3e7f6c project_files/hwc/rtl/fileio.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/hwc/rtl/fileio.c	Wed Nov 07 18:04:27 2012 +0000
@@ -0,0 +1,226 @@
+/*
+ * XXX: assume all files are text files
+ */
+
+#include "misc.h"
+#include "fileio.h"
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <sys/stat.h>
+
+io_result_t IOResult;
+int FileMode;
+
+static void init(File f) {
+    f->fp = NULL;
+    f->eof = 0;
+    f->mode = NULL;
+    f->record_len = 0;
+}
+
+void fpcrtl_assign__vars(File *f, string255 name) {
+    FIX_STRING(name);
+    *f = (File) malloc(sizeof(file_wrapper_t));
+    strcpy((*f)->file_name, name.str);
+    init(*f);
+}
+
+void fpcrtl_reset1(File f) {
+    f->fp = fopen(f->file_name, "r");
+    if (!f->fp) {
+        IOResult = IO_ERROR_DUMMY;
+        printf("Failed to open %s\n", f->file_name);
+        return;
+    } else {
+#ifdef FPCRTL_DEBUG
+        printf("Opened %s\n", f->file_name);
+#endif
+    }
+    IOResult = IO_NO_ERROR;
+    f->mode = "r";
+}
+
+void fpcrtl_reset2(File f, int l) {
+    f->eof = 0;
+    f->fp = fopen(f->file_name, "rb");
+    if (!f->fp) {
+        IOResult = IO_ERROR_DUMMY;
+        printf("Failed to open %s\n", f->file_name);
+        return;
+    }
+    IOResult = IO_NO_ERROR;
+    f->mode = "rb";
+    f->record_len = l;
+}
+
+void __attribute__((overloadable)) fpcrtl_rewrite(File f) {
+    f->fp = fopen(f->file_name, "w+");
+    if (!f->fp) {
+        IOResult = IO_ERROR_DUMMY;
+        return;
+    }
+    IOResult = IO_NO_ERROR;
+    f->mode = "w+";
+}
+
+void __attribute__((overloadable)) fpcrtl_rewrite(File f, Integer l) {
+    IOResult = IO_NO_ERROR;
+    fpcrtl_rewrite(f);
+    if (f->fp) {
+        f->record_len = l;
+    }
+}
+
+void fpcrtl_close(File f) {
+    IOResult = IO_NO_ERROR;
+    fclose(f->fp);
+    free(f);
+}
+
+boolean fpcrtl_eof(File f) {
+    IOResult = IO_NO_ERROR;
+    if (f->eof || f->fp == NULL || feof(f->fp)) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+void __attribute__((overloadable)) fpcrtl_readLn(File f) {
+    IOResult = IO_NO_ERROR;
+    char line[256];
+    if (fgets(line, sizeof(line), f->fp) == NULL) {
+        f->eof = 1;
+    }
+    if (feof(f->fp)) {
+        f->eof = 1;
+    }
+}
+
+void __attribute__((overloadable)) fpcrtl_readLn__vars(File f, Integer *i) {
+    string255 s;
+
+    if (feof(f->fp)) {
+        f->eof = 1;
+        return;
+    }
+
+    fpcrtl_readLn__vars(f, &s);
+
+    *i = atoi(s.str);
+}
+
+void __attribute__((overloadable)) fpcrtl_readLn__vars(File f, LongWord *i) {
+    string255 s;
+
+    if (feof(f->fp)) {
+        f->eof = 1;
+        return;
+    }
+
+    fpcrtl_readLn__vars(f, &s);
+
+    *i = atoi(s.str);
+}
+
+void __attribute__((overloadable)) fpcrtl_readLn__vars(File f, string255 *s) {
+
+    if (fgets(s->str, 255, f->fp) == NULL) {
+
+        s->len = 0;
+        s->str[0] = 0;
+
+        f->eof = 1;
+        return;
+    }
+
+    if (feof(f->fp)) {
+        s->len = 0;
+        f->eof = 1;
+        return;
+    }
+
+    IOResult = IO_NO_ERROR;
+
+    s->len = strlen(s->str);
+    if ((s->len > 0) && (s->str[s->len - 1] == '\n')) {
+        s->str[s->len - 1] = 0;
+        s->len--;
+    }
+}
+
+void __attribute__((overloadable)) fpcrtl_write(File f, string255 s) {
+    FIX_STRING(s);
+    fprintf(f->fp, "%s", s.str);
+}
+
+void __attribute__((overloadable)) fpcrtl_write(FILE *f, string255 s) {
+    FIX_STRING(s);
+    fprintf(f, "%s", s.str);
+}
+
+void __attribute__((overloadable)) fpcrtl_writeLn(File f, string255 s) {
+    FIX_STRING(s);
+    fprintf(f->fp, "%s\n", s.str);
+}
+
+void __attribute__((overloadable)) fpcrtl_writeLn(FILE *f, string255 s) {
+    FIX_STRING(s);
+    fprintf(f, "%s\n", s.str);
+}
+
+void fpcrtl_blockRead__vars(File f, void *buf, Integer count, Integer *result) {
+    assert(f->record_len > 0);
+    *result = fread(buf, f->record_len, count, f->fp);
+}
+
+/*
+ * XXX: dummy blockWrite
+ */
+void fpcrtl_blockWrite__vars(File f, const void *buf, Integer count,
+        Integer *result) {
+    assert(0);
+}
+
+bool fpcrtl_directoryExists(string255 dir) {
+
+    struct stat st;
+    FIX_STRING(dir);
+
+    IOResult = IO_NO_ERROR;
+
+#ifdef FPCRTL_DEBUG
+    printf("Warning: directoryExists is called. This may not work when compiled to js.\n");
+#endif
+
+    if (stat(dir.str, &st) == 0) {
+        return true;
+    }
+
+    return false;
+}
+
+bool fpcrtl_fileExists(string255 filename) {
+
+    FIX_STRING(filename);
+
+    IOResult = IO_NO_ERROR;
+
+    FILE *fp = fopen(filename.str, "r");
+    if (fp) {
+        fclose(fp);
+        return true;
+    }
+    return false;
+}
+
+void __attribute__((overloadable)) fpcrtl_flush(Text f) {
+    printf("flush not implemented\n");
+    assert(0);
+}
+
+void __attribute__((overloadable)) fpcrtl_flush(FILE *f) {
+    fflush(f);
+}
+