From 161b958fd5cae1f799aa2be0a0c0a1d717d8af4a Mon Sep 17 00:00:00 2001
From: Philippe WAUTELET <philippe.wautelet@aero.obs-mip.fr>
Date: Fri, 18 Sep 2015 16:07:02 +0200
Subject: [PATCH] lfi2cdf: added --help/-h option + improved print of the usage
---
tools/lfi2cdf/src/newmain.c | 36 +++++++++++++++++++++++++++++++++---
1 file changed, 33 insertions(+), 3 deletions(-)
diff --git a/tools/lfi2cdf/src/newmain.c b/tools/lfi2cdf/src/newmain.c
index 92b39642b..5eba51d4c 100644
--- a/tools/lfi2cdf/src/newmain.c
+++ b/tools/lfi2cdf/src/newmain.c
@@ -35,6 +35,7 @@ int main(int argc, char **argv)
int outname_flag;
int compress_flag, compress_level;
int split_flag;
+ int help_flag;
char *cmd, *infile;
int c;
char buff[BUFSIZE];
@@ -69,6 +70,7 @@ int main(int argc, char **argv)
static struct option long_options[] = {
{"cdf4", no_argument, 0, '4' },
{"compress", required_argument, 0, 'c' },
+ {"help", no_argument, 0, 'h' },
{"list", no_argument, 0, 'l' },
{"merge", required_argument, 0, 'm' },
{"output", required_argument, 0, 'o' },
@@ -78,7 +80,7 @@ int main(int argc, char **argv)
{0, 0, 0, 0 }
};
- c = getopt_long(argc, argv, "4c:lm:o:rsv:",
+ c = getopt_long(argc, argv, "4c:hlm:o:rsv:",
long_options, &option_index);
if (c == -1)
break;
@@ -101,6 +103,9 @@ int main(int argc, char **argv)
case '4':
hdf5_flag = 1;
break;
+ case 'h':
+ help_flag = 1;
+ break;
case 'l':
list_flag = 1;
break;
@@ -139,9 +144,34 @@ int main(int argc, char **argv)
}
}
- if (optind == argc) {
- printf("usage : lfi2cdf [--cdf4 -4] [-l] [-v --var var1[,...]] [-r --reduce-precision] [-m --merge number_of_z_levels] [-s --split] [-o --output output-file.nc] [-c --compress compression_level] input-file.lfi\n");
+ if (optind == argc || help_flag) {
+ printf("usage : lfi2cdf [-h --help] [--cdf4 -4] [-l] [-v --var var1[,...]] [-r --reduce-precision] [-m --merge number_of_z_levels] [-s --split] [-o --output output-file.nc] [-c --compress compression_level] input-file.lfi\n");
printf(" cdf2lfi [-o --output output-file.lfi] input-file.nc\n");
+ printf("Usage: lfi2cdf [OPTION] ... lfi_file\n");
+ printf(" cdf2lfi [OPTION] ... nc_file\n");
+ printf("\nOptions:\n");
+ printf(" --cdf4, -4\n");
+ printf(" Write netCDF file in netCDF-4 format (HDF5 compatible) (lfi2cdf only)\n");
+ printf(" --compress, -c compression_level\n");
+ printf(" Compress data. The compression level should be in the 1 to 9 interval.\n");
+ printf(" Only supported with the netCDF-4 format (lfi2cdf only)\n");
+ printf(" --help, -h\n");
+ printf(" Print this text\n");
+ printf(" --list, -l\n");
+ printf(" List all the fields of the LFI file and returns (lfi2cdf only)\n");
+ printf(" --merge, -m number_of_z_levels\n");
+ printf(" Merge LFI files which are split by vertical level (lfi2cdf only)\n");
+ printf(" --output, -o\n");
+ printf(" Name of file for the output\n");
+ printf(" --reduce-precision, -r\n");
+ printf(" Reduce the precision of the floating point variables to single precision (lfi2cdf only)\n");
+ printf(" --split, -s\n");
+ printf(" Split variables specified with the -v option (one per file) (lfi2cdf only)\n");
+ printf(" --var, -v var1[,...]\n");
+ printf(" List of the variable to write in the output file. Variables names have to be separated by commas (,).\n");
+ printf(" A variable can be computed from the sum of existing variables (format: new_var=var1+var2[+...])\n");
+ printf(" (lfi2cdf only)\n");
+ printf("\n");
exit(EXIT_FAILURE);
}
--
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