82     if (state->mode == GZ_READ) {   /* for reading ... */
94 local gzFile gz_open(path, fd, mode)  in gz_open()  argument
97     const char *mode;
122     state->mode = GZ_NONE;
126     while (*mode) {
127         if (*mode >= '0' && *mode <= '9')
128             state->level = *mode - '0';
130             switch (*mode) {
132                 state->mode = GZ_READ;
136                 state->mode = GZ_WRITE;
139                 state->mode = GZ_APPEND;
175         mode++;
179     if (state->mode == GZ_NONE) {
185     if (state->mode == GZ_READ) {
233         (state->mode == GZ_READ ?
239           (state->mode == GZ_WRITE ?
254     if (state->mode == GZ_APPEND) {
256         state->mode = GZ_WRITE;         /* simplify later checks */
260     if (state->mode == GZ_READ) {
273 gzFile ZEXPORT gzopen(path, mode)  in gzopen()  argument
275     const char *mode;
277     return gz_open(path, -1, mode);
281 gzFile ZEXPORT gzopen64(path, mode)  in gzopen64()  argument
283     const char *mode;
285     return gz_open(path, -1, mode);
289 gzFile ZEXPORT gzdopen(fd, mode)  in gzdopen()  argument
291     const char *mode;
303     gz = gz_open(path, fd, mode);
310 gzFile ZEXPORT gzopen_w(path, mode)  in gzopen_w()  argument
312     const char *mode;
314     return gz_open(path, -2, mode);
329     if (state->mode != GZ_READ && state->mode != GZ_WRITE)
357     if (state->mode != GZ_READ ||
382     if (state->mode != GZ_READ && state->mode != GZ_WRITE)
401     if (state->mode == GZ_READ && state->how == COPY &&
418         if (state->mode != GZ_READ)         /* writing -- can't go backwards */
428     if (state->mode == GZ_READ) {
467     if (state->mode != GZ_READ && state->mode != GZ_WRITE)
495     if (state->mode != GZ_READ && state->mode != GZ_WRITE)
502     if (state->mode == GZ_READ)             /* reading */
527     if (state->mode != GZ_READ && state->mode != GZ_WRITE)
531     return state->mode == GZ_READ ? state->past : 0;
545     if (state->mode != GZ_READ && state->mode != GZ_WRITE)
565     if (state->mode != GZ_READ && state->mode != GZ_WRITE)
569     if (state->mode == GZ_READ) {