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[Backport 6.1] Let GMT examine if the DCW file has a minimum version requirement #3708

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Merged
merged 1 commit into from
Jul 23, 2020
Merged

[Backport 6.1] Let GMT examine if the DCW file has a minimum version requirement #3708

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52 changes: 36 additions & 16 deletions src/gmt_dcw.c
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Original file line number Diff line number Diff line change
Expand Up @@ -235,6 +235,7 @@ struct GMT_DATASET * gmt_DCW_operation (struct GMT_CTRL *GMT, struct GMT_DCW_SEL
char TAG[GMT_LEN16] = {""}, dim[GMT_LEN16] = {""}, xname[GMT_LEN16] = {""};
char yname[GMT_LEN16] = {""}, code[GMT_LEN16] = {""}, state[GMT_LEN16] = {""};
char msg[GMT_BUFSIZ] = {""}, path[PATH_MAX] = {""}, list[GMT_BUFSIZ] = {""};
char version[GMT_LEN32] = {""}, gmtversion[GMT_LEN32] = {""}, source[GMT_LEN256] = {""}, title[GMT_LEN256] = {""};
char label[GMT_LEN256] = {""}, header[GMT_LEN256] = {""};
double west, east, south, north, xscl, yscl, out[2], *lon = NULL, *lat = NULL;
struct GMT_RANGE *Z = NULL;
Expand Down Expand Up @@ -346,30 +347,49 @@ struct GMT_DATASET * gmt_DCW_operation (struct GMT_CTRL *GMT, struct GMT_DCW_SEL
}

/* Get global attributes */
if (gmt_M_is_verbose (GMT, GMT_MSG_WARNING)) {
char version[GMT_LEN16] = {""}, source[GMT_LEN256] = {""}, title[GMT_LEN256] = {""};
if ((retval = nc_get_att_text (ncid, NC_GLOBAL, "version", version))) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Cannot obtain attribute version\n");
gmt_free_segment (GMT, &P);
gmt_M_free (GMT, order);
return NULL;
}
if ((retval = nc_get_att_text (ncid, NC_GLOBAL, "title", title))) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Cannot obtain attribute title\n");
if ((retval = nc_get_att_text (ncid, NC_GLOBAL, "version", version))) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Cannot obtain DCW attribute version\n");
gmt_free_segment (GMT, &P);
gmt_M_free (GMT, order);
return NULL;
}
if ((retval = nc_get_att_text (ncid, NC_GLOBAL, "title", title))) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Cannot obtain DCW attribute title\n");
gmt_free_segment (GMT, &P);
gmt_M_free (GMT, order);
return NULL;
}
if ((retval = nc_get_att_text (ncid, NC_GLOBAL, "source", source))) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Cannot obtain DCW attribute source\n");
gmt_free_segment (GMT, &P);
gmt_M_free (GMT, order);
return NULL;
}
if ((retval = nc_get_att_text (ncid, NC_GLOBAL, "gmtversion", gmtversion)) == NC_NOERR)
GMT_Report (GMT->parent, GMT_MSG_DEBUG, "Found gmtversion string in DCW file: %s\n", gmtversion);

if (gmt_M_is_verbose (GMT, GMT_MSG_INFORMATION)) {
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Using country and state data from dcw-gmt\n");
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Title : %s\n", title);
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Source : %s\n", source);
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Version: %s\n", version);
if (gmtversion[0]) GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "DCW version %s requires GMT version %s or later.\n", version, gmtversion);
}

if (gmtversion[0]) { /* The gmtversion attribute was available [starting with DCW 1.2.0] */
int maj, min, rel;
if (sscanf (gmtversion, "%d.%d.%d", &maj, &min, &rel) != 3) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Unable to parse minimum GMT version information\n");
gmt_free_segment (GMT, &P);
gmt_M_free (GMT, order);
return NULL;
}
if ((retval = nc_get_att_text (ncid, NC_GLOBAL, "source", source))) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "Cannot obtain attribute source\n");
if (maj > GMT_MAJOR_VERSION || (maj == GMT_MAJOR_VERSION && min > GMT_MINOR_VERSION) || (maj == GMT_MAJOR_VERSION && min == GMT_MINOR_VERSION && rel > GMT_RELEASE_VERSION)) {
GMT_Report (GMT->parent, GMT_MSG_ERROR, "This DCW version (%s) requires at least GMT %s; you have %d.%d.%d\n", version, gmtversion, GMT_MAJOR_VERSION, GMT_MINOR_VERSION, GMT_RELEASE_VERSION);
gmt_free_segment (GMT, &P);
gmt_M_free (GMT, order);
return NULL;
}
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Using country and state data from dcw-gmt\n");
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Title : %s\n", title);
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Source : %s\n", source);
GMT_Report (GMT->parent, GMT_MSG_INFORMATION, "Version: %s\n", version);
}

if ((mode & GMT_DCW_DUMP) || (mode & GMT_DCW_REGION)) { /* Dump the coordinates to stdout or return -R means setting col types */
Expand Down