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netcdf-c/ncgen/main.c

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/*********************************************************************
* Copyright 1993, UCAR/Unidata
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
*********************************************************************/
/* $Id: main.c,v 1.33 2010/05/26 21:43:36 dmh Exp $ */
/* $Header: /upc/share/CVS/netcdf-3/ncgen/main.c,v 1.33 2010/05/26 21:43:36 dmh Exp $ */
#include "includes.h"
#include "offsets.h"
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#ifdef _MSC_VER
#include "XGetopt.h"
#define snprintf _snprintf
int opterr;
int optind;
#endif
/* Default is netcdf-3 mode 1 */
#define DFALTCMODE 0
extern void init_netcdf(void);
extern void parse_init(void);
extern int ncgparse(void);
/* For error messages */
char* progname;
char* cdlname;
/* option flags */
int nofill_flag;
char* mainname; /* name to use for main function; defaults to "main"*/
Language l_flag;
int syntax_only;
int header_only;
/* flags for tracking what output format to use */
int k_flag; /* > 0 => -k was specified on command line*/
int format_flag; /* _Format attribute value (same range as -k flag) */
int format_attribute; /* 1=>format came from format attribute */
int enhanced_flag; /* 1 => netcdf-4 constructs appear in the parse */
int specials_flag; /* 1=> special attributes are present */
int usingclassic;
int cmode_modifier;
int diskless;
char* binary_ext = ".nc";
size_t nciterbuffersize;
struct Vlendata* vlendata;
char *netcdf_name; /* command line -o file name */
char *datasetname; /* name from the netcdf <name> {} */
extern FILE *ncgin;
/* Forward */
static char* ubasename(char*);
void usage( void );
int main( int argc, char** argv );
/* Define tables vs modes for legal -k values*/
struct Kvalues legalkinds[NKVALUES] = {
{"1", 1},
{"classic", 1},
/* The 64-bit offset kind (2) should only be used if actually needed */
{"2", 2},
{"64-bit-offset", 2},
{"64-bit offset", 2},
/* NetCDF-4 HDF5 format*/
{"3", 3},
{"hdf5", 3},
{"netCDF-4", 3},
{"netcdf-4", 3},
{"netcdf4", 3},
{"enhanced", 3},
/* NetCDF-4 HDF5 format, but using only nc3 data model */
{"4", 4},
{"hdf5-nc3", 4},
{"netCDF-4 classic model", 4},
{"enhanced-nc3", 4},
/* null terminate*/
{NULL,0}
};
#ifndef _MSC_VER
struct Languages {
char* name;
Language flag;
} legallanguages[] = {
{"b", L_BINARY},
{"c", L_C},
{"C", L_C},
{"f77", L_F77},
{"fortran77", L_F77},
{"Fortran77", L_F77},
{"j", L_JAVA},
{"java", L_JAVA},
{NULL,L_UNDEFINED}
};
#else
typedef struct Languages {
char* name;
Language flag;
} Languages;
struct Languages legallanguages[] = {
{"b", L_BINARY},
{"c", L_C},
{"C", L_C},
{"f77", L_F77},
{"fortran77", L_F77},
{"Fortran77", L_F77},
{"j", L_JAVA},
{"java", L_JAVA},
{NULL,L_UNDEFINED}
};
#endif
/* BOM Sequences */
static char* U8 = "\xEF\xBB\xBF"; /* UTF-8 */
static char* BE32 = "\x00\x00\xFE\xFF"; /* UTF-32; big-endian */
static char* LE32 = "\xFF\xFE"; /* UTF-32; little-endian */
static char* BE16 = "\xFE\xFF"; /* UTF-16; big-endian */
static char* LE16 = "\xFF\xFE"; /* UTF-16; little-endian */
/* The default minimum iterator size depends
on whether we are doing binary or language
based output.
*/
#define DFALTBINNCITERBUFFERSIZE 0x40000 /* about 250k bytes */
#define DFALTLANGNCITERBUFFERSIZE 0x4000 /* about 15k bytes */
/* strip off leading path */
/* result is malloc'd */
static char *
ubasename(char *logident)
{
char* sep;
sep = strrchr(logident,'/');
#ifdef MSDOS
if(sep == NULL) sep = strrchr(logident,'\\');
#endif
if(sep == NULL) return logident;
sep++; /* skip past the separator */
return sep;
}
void
usage(void)
{
derror("Usage: %s [ -b ] [ -c ] [ -f ] [ -k kind ] [ -x ] [-S struct-format] [-M <name> [ -o outfile] [ file ... ]",
progname);
derror("netcdf library version %s", nc_inq_libvers());
}
int
main(
int argc,
char *argv[])
{
int c;
FILE *fp;
struct Languages* langs;
char* lang_name;
#ifdef __hpux
setlocale(LC_CTYPE,"");
#endif
init_netcdf();
opterr = 1; /* print error message if bad option */
progname = ubasename(argv[0]);
cdlname = "-";
netcdf_name = NULL;
datasetname = NULL;
l_flag = 0;
nofill_flag = 0;
syntax_only = 0;
header_only = 0;
mainname = "main";
nciterbuffersize = 0;
k_flag = 0;
format_flag = 0;
format_attribute = 0;
enhanced_flag = 0;
specials_flag = 0;
diskless = 0;
#if _CRAYMPP && 0
/* initialize CRAY MPP parallel-I/O library */
(void) par_io_init(32, 32);
#endif
while ((c = getopt(argc, argv, "hbcfk:l:no:v:xdM:D:B:P")) != EOF)
switch(c) {
case 'd':
debug = 1;
break;
case 'D':
debug = atoi(optarg);
break;
case 'c': /* for c output, old version of "-lc" */
if(l_flag != 0) {
fprintf(stderr,"Please specify only one language\n");
return 1;
}
l_flag = L_C;
fprintf(stderr,"-c is deprecated: please use -lc\n");
break;
case 'f': /* for f77 output, old version of "-lf" */
if(l_flag != 0) {
fprintf(stderr,"Please specify only one language\n");
return 1;
}
l_flag = L_F77;
fprintf(stderr,"-f is deprecated: please use -lf77\n");
break;
case 'b': /* for binary netcdf output, ".nc" extension */
if(l_flag != 0) {
fprintf(stderr,"Please specify only one language\n");
return 1;
}
l_flag = L_BINARY;
break;
case 'h':
header_only = 1;
break;
case 'l': /* specify language, instead of using -c or -f or -b */
{
if(l_flag != 0) {
fprintf(stderr,"Please specify only one language\n");
return 1;
}
lang_name = (char*) emalloc(strlen(optarg)+1);
(void)strcpy(lang_name, optarg);
for(langs=legallanguages;langs->name != NULL;langs++) {
if(strcmp(lang_name,langs->name)==0) {
l_flag = langs->flag;
break;
}
}
if(langs->name == NULL) {
derror("%s: output language %s not implemented",
progname, lang_name);
return(1);
}
}
break;
case 'n': /* old version of -b, uses ".cdf" extension */
if(l_flag != 0) {
fprintf(stderr,"Please specify only one language\n");
return 1;
}
l_flag = L_BINARY;
binary_ext = ".cdf";
break;
case 'o': /* to explicitly specify output name */
netcdf_name = nulldup(optarg);
break;
case 'x': /* set nofill mode to speed up creation of large files */
nofill_flag = 1;
break;
case 'v': /* a deprecated alias for "kind" option */
/*FALLTHRU*/
case 'k': /* for specifying variant of netCDF format to be generated
Possible values are:
1 (=> classic 32 bit)
2 (=> classic 64 bit)
3 (=> enhanced)
4 (=> classic, but stored in an enhanced file format)
Also provide string versions of above
"classic"
"64-bit-offset"
"64-bit offset"
"enhanced" | "hdf5" | "netCDF-4"
"enhanced-nc3" | "hdf5-nc3" | "netCDF-4 classic model"
*/
{
struct Kvalues* kvalue;
char *kind_name = (char *) emalloc(strlen(optarg)+1);
if (! kind_name) {
derror ("%s: out of memory", progname);
return(1);
}
(void)strcpy(kind_name, optarg);
for(kvalue=legalkinds;kvalue->name;kvalue++) {
if(strcmp(kind_name,kvalue->name) == 0) {
k_flag = kvalue->k_flag;
break;
}
}
if(kvalue->name == NULL) {
derror("Invalid format: %s",kind_name);
return 2;
}
}
break;
case 'M': /* Determine the name for the main function */
mainname = nulldup(optarg);
break;
case 'B':
nciterbuffersize = atoi(optarg);
break;
case 'P': /* diskless with persistence */
diskless = 1;
break;
case '?':
usage();
return(8);
}
if(l_flag == 0) {
l_flag = L_BINARY; /* default */
/* Treat -k or -o as an implicit -lb assuming no other -l flags */
if(k_flag == 0 && netcdf_name == NULL)
syntax_only = 1;
}
/* Compute/default the iterator buffer size */
if(l_flag == L_BINARY) {
if(nciterbuffersize == 0 )
nciterbuffersize = DFALTBINNCITERBUFFERSIZE;
} else {
if(nciterbuffersize == 0)
nciterbuffersize = DFALTLANGNCITERBUFFERSIZE;
}
#ifndef ENABLE_C
if(c_flag) {
fprintf(stderr,"C not currently supported\n");
exit(1);
}
#endif
#ifndef ENABLE_BINARY
if(l_flag == L_BINARY) {
fprintf(stderr,"Binary netcdf not currently supported\n");
exit(1);
}
#endif
#ifndef ENABLE_JAVA
if(l_flag == L_JAVA) {
fprintf(stderr,"Java not currently supported\n");
exit(1);
}
#else
if(l_flag == L_JAVA && strcmp(mainname,"main")==0)
mainname = "Main";
#endif
#ifndef ENABLE_F77
if(l_flag == L_F77) {
fprintf(stderr,"F77 not currently supported\n");
exit(1);
}
#endif
if(l_flag != L_BINARY)
diskless = 0;
argc -= optind;
argv += optind;
if (argc > 1) {
derror ("%s: only one input file argument permitted",progname);
return(6);
}
fp = stdin;
if (argc > 0 && strcmp(argv[0], "-") != 0) {
char bom[4];
size_t count;
if ((fp = fopen(argv[0], "r")) == NULL) {
derror ("can't open file %s for reading: ", argv[0]);
perror("");
return(7);
}
/* Check the leading bytes for an occurrence of a BOM */
/* re: http://www.unicode.org/faq/utf_bom.html#BOM */
/* Attempt to read the first four bytes */
memset(bom,0,sizeof(bom));
count = fread(bom,1,2,fp);
if(count == 2) {
switch (bom[0]) {
case '\x00':
case '\xFF':
case '\xFE':
/* Only UTF-* is allowed; complain and exit */
fprintf(stderr,"Input file contains a BOM indicating a non-UTF8 encoding\n");
return 1;
case '\xEF':
/* skip the BOM */
fread(bom,1,1,fp);
break;
default: /* legal printable char, presumably; rewind */
rewind(fp);
break;
}
}
cdlname = (char*)emalloc(NC_MAX_NAME);
cdlname = nulldup(argv[0]);
if(cdlname != NULL) {
if(strlen(cdlname) > NC_MAX_NAME)
cdlname[NC_MAX_NAME] = '\0';
}
}
/* Standard Unidata java interface => usingclassic */
parse_init();
ncgin = fp;
if(debug >= 2) {ncgdebug=1;}
if(ncgparse() != 0)
return 1;
/* Compute the k_flag (1st pass) using rules in the man page (ncgen.1).*/
#ifndef USE_NETCDF4
if(enhanced_flag) {
derror("CDL input is enhanced mode, but --disable-netcdf4 was specified during build");
return 0;
}
#endif
if(l_flag == L_JAVA || l_flag == L_F77) {
k_flag = 1;
if(enhanced_flag) {
derror("Java or Fortran requires classic model CDL input");
return 0;
}
}
if(k_flag == 0)
k_flag = format_flag;
if(enhanced_flag && k_flag == 0)
k_flag = 3;
if(enhanced_flag && k_flag != 3) {
derror("-k or _Format conflicts with enhanced CDL input");
return 0;
}
if(specials_flag > 0 && k_flag == 0)
#ifdef USE_NETCDF4
k_flag = 3;
#else
k_flag = 1;
#endif
if(k_flag == 0)
k_flag = 1;
usingclassic = (k_flag <= 2?1:0);
/* compute cmode_modifier */
switch (k_flag) {
case 1: cmode_modifier = 0; break;
case 2: cmode_modifier = NC_64BIT_OFFSET; break;
case 3: cmode_modifier = NC_NETCDF4; break;
case 4: cmode_modifier = NC_NETCDF4 | NC_CLASSIC_MODEL; break;
default: ASSERT(0); /* cannot happen */
}
if(diskless)
cmode_modifier |= (NC_DISKLESS|NC_NOCLOBBER);
processsemantics();
if(!syntax_only && error_count == 0)
define_netcdf();
return 0;
}
END_OF_MAIN();
void
init_netcdf(void) /* initialize global counts, flags */
{
compute_alignments();
memset((void*)&nullconstant,0,sizeof(NCConstant));
fillconstant = nullconstant;
fillconstant.nctype = NC_FILLVALUE;
codebuffer = bbNew();
stmt = bbNew();
error_count = 0; /* Track # of errors */
}
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