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Make checking for registrations more robust #6160

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Dec 27, 2021
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Make checking for registrations more robust #6160

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12 changes: 10 additions & 2 deletions src/gmt_remote.c
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Original file line number Diff line number Diff line change
Expand Up @@ -463,8 +463,10 @@ void gmt_set_unspecified_remote_registration (struct GMTAPI_CTRL *API, char **fi
* There are a few different scenarios where this can happen:
* 1. Users of GMT <= 6.0.0 are used to say earth_relief_01m. These will now get p.
* 2. Users who do not care about registration. If so, they get p if available. */
char newfile[GMT_LEN256] = {""}, reg[2] = {'p', 'g'}, *file = NULL, *infile = NULL, *ext = NULL, *c = NULL;
char newfile[GMT_LEN256] = {""}, dir[GMT_LEN128] = {""}, reg[2] = {'p', 'g'};
char *file = NULL, *infile = NULL, *ext = NULL, *c = NULL, *p = NULL, *q = NULL;
int k_data, k;
size_t L;
if (file_ptr == NULL || (file = *file_ptr) == NULL || file[0] == '\0') return;
if (gmt_M_file_is_memory (file)) return; /* Not a remote file for sure */
if (file[0] != '@') return;
Expand All @@ -475,7 +477,13 @@ void gmt_set_unspecified_remote_registration (struct GMTAPI_CTRL *API, char **fi
ext = gmt_chop_ext (infile);
/* If the remote file is found then there is nothing to do */
if ((k_data = gmt_remote_dataset_id (API, infile)) == GMT_NOTSET) goto clean_up;
if (strstr (file, "_p") || strstr (file, "_g")) goto clean_up; /* Already have the registration codes */
L = strlen (API->remote_info[k_data].dir) - 1; /* Length of dir minus trailing slash */
strncpy (dir, API->remote_info[k_data].dir, L); dir[L] = '\0'; /* Duplicate dir without slash */
p = strrchr (dir, '/') + 1; /* Start of final subdirectory (skipping over the slash we found) */
q = strstr (file, p); /* Start of the file name (most likely the same as &file[1] but we want to make sure) */
if (q == NULL) return; /* Should never happen but definitively nothing more to do here - just a safety valve */
q += strlen (p); /* Move to the end of family name after which any registration codes would be found */
if (strstr (q, "_p") || strstr (q, "_g")) goto clean_up; /* Already have the registration codes */
for (k = 0; k < 2; k++) {
/* First see if this _<reg> version exists of this dataset */
sprintf (newfile, "%s_%c", infile, reg[k]);
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