syncfiles/util.c
Dietrich Epp 4e0d9b16c7 Refactor SyncFiles
- Split into multiple source files
- Create new file action enum
- Push or pull must be explicit

GitOrigin-RevId: c6ccd85f1452a1333a1deb3495792451a0b8f860
2021-03-17 21:05:17 -04:00

122 lines
3.6 KiB
C

#include "defs.h"
#include <MacErrors.h>
#include <MacMemory.h>
#include <MacTypes.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
void print_err(const char *msg, ...) {
va_list ap;
fputs("## Error: ", stderr);
va_start(ap, msg);
vfprintf(stderr, msg, ap);
va_end(ap);
fputc('\n', stderr);
}
// Map from OSErr codes to messages. As a heuristic, this should include error
// codes caused by toolbox calls in this program which are readily understood by
// the user. It can exclude error codes that are likely to indicate a
// programming error.
struct error_message {
OSErr err;
const char *msg;
};
#define E(e, m) \
{ e, m "\0" #e }
static const struct error_message kErrorMessages[] = {
E(dirFulErr, "directory full"), // -33
E(dskFulErr, "disk full"), // -34
E(ioErr, "I/O error"), // -36
E(bdNamErr, "bad name"), // -37
E(fnfErr, "file not found"), // -43
E(wPrErr, "disk is write-protected"), // -44
E(fLckdErr, "file is locked"), // -45
E(vLckdErr, "volume is locked"), // -46
E(fBsyErr, "file is busy"), // -47
E(dupFNErr, "destination already exists"), // -48
E(opWrErr, "file already open for writing"), // -49
E(paramErr, "parameter error"), // -50
E(permErr, "cannot write to locked file"), // -54
E(dirNFErr, "directory not found"), // -120
E(wrgVolTypErr, "not an HFS volume"), // -123
E(diffVolErr, "files on different volumes"), // -1303
E(afpAccessDenied, "user does not have access privileges (AFP)"), // -5000
E(afpObjectTypeErr,
"file/directory specified where directory/file expected"), // -5025
E(afpSameObjectErr, "objects are the same"), // -5038
};
#undef E
// Return the error message for a Macintosh toolbox error code. Returns NULL if
// the error is not known.
static const char *mac_strerror(OSErr err) {
int i, n = sizeof(kErrorMessages) / sizeof(*kErrorMessages);
for (i = 0; i < n; i++) {
if (kErrorMessages[i].err == err) {
return kErrorMessages[i].msg;
}
}
return NULL;
}
void print_errcode(OSErr err, const char *msg, ...) {
va_list ap;
const char *emsg;
fputs("## Error: ", stderr);
va_start(ap, msg);
vfprintf(stderr, msg, ap);
va_end(ap);
emsg = mac_strerror(err);
if (emsg != NULL) {
fprintf(stderr, ": %s (%d)\n", emsg, err);
} else {
fprintf(stderr, ": err=%d\n", err);
}
}
void print_memerr(unsigned long size) {
OSErr err;
err = MemError();
print_errcode(err, "out of memory; size=%lu", size);
}
void log_call(OSErr err, const char *function) {
const char *emsg;
if (err == 0) {
fprintf(stderr, "## %s: noErr\n", function);
return;
}
emsg = mac_strerror(err);
if (emsg != NULL) {
emsg += strlen(emsg) + 1;
fprintf(stderr, "## %s: %s (%d)\n", function, emsg, err);
} else {
fprintf(stderr, "## %s: %d\n", function, err);
}
}
int c2pstr(Str255 ostr, const char *istr) {
size_t n = strlen(istr);
if (n > 255) {
print_err("path too long: %s", istr);
return 1;
}
ostr[0] = n;
memcpy(ostr + 1, istr, n);
memset(ostr + 1 + n, 0, 255 - n);
return 0;
}
void p2cstr(char *ostr, const unsigned char *istr) {
unsigned len = istr[0];
memcpy(ostr, istr + 1, len);
ostr[len] = '\0';
}