mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-03 08:01:25 +08:00
7e582ad3f2
The code for handling character constants in datalists in ncgen has some problems. 1. It failed on large constants 2. It did not handle e.g. var = 'a', 'b', ... in the same way that ncgen3 did. 3. The code for generate.c and genchar.c needed some refactoring to make it a little simpler (but not simple).
503 lines
12 KiB
C
503 lines
12 KiB
C
/*********************************************************************
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* Copyright 1993, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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*********************************************************************/
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/* $Id: main.c,v 1.33 2010/05/26 21:43:36 dmh Exp $ */
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/* $Header: /upc/share/CVS/netcdf-3/ncgen/main.c,v 1.33 2010/05/26 21:43:36 dmh Exp $ */
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#include "includes.h"
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#include "offsets.h"
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#ifdef _MSC_VER
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#include "XGetopt.h"
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#define snprintf _snprintf
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int opterr;
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int optind;
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#endif
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/* Default is netcdf-3 mode 1 */
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#define DFALTCMODE 0
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extern void init_netcdf(void);
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extern void parse_init(void);
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extern int ncgparse(void);
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/* For error messages */
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char* progname;
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char* cdlname;
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/* option flags */
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int nofill_flag;
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char* mainname; /* name to use for main function; defaults to "main"*/
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Language l_flag;
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int syntax_only;
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int header_only;
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/* flags for tracking what output format to use */
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int k_flag; /* > 0 => -k was specified on command line*/
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int format_flag; /* _Format attribute value (same range as -k flag) */
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int format_attribute; /* 1=>format came from format attribute */
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int enhanced_flag; /* 1 => netcdf-4 constructs appear in the parse */
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int specials_flag; /* 1=> special attributes are present */
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int usingclassic;
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int cmode_modifier;
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int diskless;
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char* binary_ext = ".nc";
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size_t nciterbuffersize;
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struct Vlendata* vlendata;
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char *netcdf_name; /* command line -o file name */
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char *datasetname; /* name from the netcdf <name> {} */
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extern FILE *ncgin;
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/* Forward */
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static char* ubasename(char*);
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void usage( void );
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int main( int argc, char** argv );
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/* Define tables vs modes for legal -k values*/
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struct Kvalues legalkinds[NKVALUES] = {
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{"1", 1},
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{"classic", 1},
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/* The 64-bit offset kind (2) should only be used if actually needed */
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{"2", 2},
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{"64-bit-offset", 2},
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{"64-bit offset", 2},
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/* NetCDF-4 HDF5 format*/
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{"3", 3},
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{"hdf5", 3},
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{"netCDF-4", 3},
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{"netcdf-4", 3},
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{"netcdf4", 3},
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{"enhanced", 3},
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/* NetCDF-4 HDF5 format, but using only nc3 data model */
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{"4", 4},
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{"hdf5-nc3", 4},
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{"netCDF-4 classic model", 4},
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{"enhanced-nc3", 4},
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/* null terminate*/
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{NULL,0}
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};
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#ifndef _MSC_VER
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struct Languages {
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char* name;
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Language flag;
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} legallanguages[] = {
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{"b", L_BINARY},
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{"c", L_C},
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{"C", L_C},
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{"f77", L_F77},
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{"fortran77", L_F77},
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{"Fortran77", L_F77},
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{"j", L_JAVA},
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{"java", L_JAVA},
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{NULL,L_UNDEFINED}
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};
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#else
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typedef struct Languages {
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char* name;
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Language flag;
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} Languages;
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struct Languages legallanguages[] = {
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{"b", L_BINARY},
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{"c", L_C},
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{"C", L_C},
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{"f77", L_F77},
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{"fortran77", L_F77},
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{"Fortran77", L_F77},
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{"j", L_JAVA},
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{"java", L_JAVA},
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{NULL,L_UNDEFINED}
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};
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#endif
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#if 0 /*not used*/
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/* BOM Sequences */
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static char* U8 = "\xEF\xBB\xBF"; /* UTF-8 */
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static char* BE32 = "\x00\x00\xFE\xFF"; /* UTF-32; big-endian */
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static char* LE32 = "\xFF\xFE"; /* UTF-32; little-endian */
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static char* BE16 = "\xFE\xFF"; /* UTF-16; big-endian */
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static char* LE16 = "\xFF\xFE"; /* UTF-16; little-endian */
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#endif
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/* The default minimum iterator size depends
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on whether we are doing binary or language
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based output.
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*/
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#define DFALTBINNCITERBUFFERSIZE 0x40000 /* about 250k bytes */
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#define DFALTLANGNCITERBUFFERSIZE 0x4000 /* about 15k bytes */
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/* strip off leading path */
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/* result is malloc'd */
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static char *
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ubasename(char *logident)
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{
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char* sep;
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sep = strrchr(logident,'/');
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#ifdef MSDOS
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if(sep == NULL) sep = strrchr(logident,'\\');
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#endif
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if(sep == NULL) return logident;
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sep++; /* skip past the separator */
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return sep;
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}
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void
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usage(void)
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{
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derror("Usage: %s [ -b ] [ -c ] [ -f ] [ -k kind ] [ -x ] [-S struct-format] [-M <name> [ -o outfile] [ file ... ]",
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progname);
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derror("netcdf library version %s", nc_inq_libvers());
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}
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int
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main(
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int argc,
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char *argv[])
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{
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int c;
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FILE *fp;
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struct Languages* langs;
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char* lang_name;
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#ifdef __hpux
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setlocale(LC_CTYPE,"");
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#endif
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init_netcdf();
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opterr = 1; /* print error message if bad option */
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progname = ubasename(argv[0]);
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cdlname = "-";
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netcdf_name = NULL;
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datasetname = NULL;
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l_flag = 0;
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nofill_flag = 0;
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syntax_only = 0;
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header_only = 0;
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mainname = "main";
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nciterbuffersize = 0;
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k_flag = 0;
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format_flag = 0;
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format_attribute = 0;
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enhanced_flag = 0;
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specials_flag = 0;
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diskless = 0;
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#if _CRAYMPP && 0
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/* initialize CRAY MPP parallel-I/O library */
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(void) par_io_init(32, 32);
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#endif
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while ((c = getopt(argc, argv, "hbcfk:l:no:v:xdM:D:B:P")) != EOF)
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switch(c) {
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case 'd':
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debug = 1;
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break;
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case 'D':
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debug = atoi(optarg);
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break;
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case 'c': /* for c output, old version of "-lc" */
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if(l_flag != 0) {
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fprintf(stderr,"Please specify only one language\n");
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return 1;
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}
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l_flag = L_C;
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fprintf(stderr,"-c is deprecated: please use -lc\n");
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break;
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case 'f': /* for f77 output, old version of "-lf" */
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if(l_flag != 0) {
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fprintf(stderr,"Please specify only one language\n");
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return 1;
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}
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l_flag = L_F77;
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fprintf(stderr,"-f is deprecated: please use -lf77\n");
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break;
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case 'b': /* for binary netcdf output, ".nc" extension */
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if(l_flag != 0) {
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fprintf(stderr,"Please specify only one language\n");
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return 1;
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}
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l_flag = L_BINARY;
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break;
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case 'h':
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header_only = 1;
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break;
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case 'l': /* specify language, instead of using -c or -f or -b */
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{
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if(l_flag != 0) {
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fprintf(stderr,"Please specify only one language\n");
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return 1;
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}
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lang_name = (char*) emalloc(strlen(optarg)+1);
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(void)strcpy(lang_name, optarg);
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for(langs=legallanguages;langs->name != NULL;langs++) {
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if(strcmp(lang_name,langs->name)==0) {
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l_flag = langs->flag;
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break;
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}
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}
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if(langs->name == NULL) {
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derror("%s: output language %s not implemented",
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progname, lang_name);
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return(1);
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}
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}
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break;
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case 'n': /* old version of -b, uses ".cdf" extension */
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if(l_flag != 0) {
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fprintf(stderr,"Please specify only one language\n");
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return 1;
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}
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l_flag = L_BINARY;
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binary_ext = ".cdf";
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break;
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case 'o': /* to explicitly specify output name */
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netcdf_name = nulldup(optarg);
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break;
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case 'x': /* set nofill mode to speed up creation of large files */
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nofill_flag = 1;
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break;
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case 'v': /* a deprecated alias for "kind" option */
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/*FALLTHRU*/
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case 'k': /* for specifying variant of netCDF format to be generated
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Possible values are:
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1 (=> classic 32 bit)
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2 (=> classic 64 bit)
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3 (=> enhanced)
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4 (=> classic, but stored in an enhanced file format)
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Also provide string versions of above
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"classic"
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"64-bit-offset"
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"64-bit offset"
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"enhanced" | "hdf5" | "netCDF-4"
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"enhanced-nc3" | "hdf5-nc3" | "netCDF-4 classic model"
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*/
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{
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struct Kvalues* kvalue;
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char *kind_name = (char *) emalloc(strlen(optarg)+1);
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if (! kind_name) {
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derror ("%s: out of memory", progname);
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return(1);
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}
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(void)strcpy(kind_name, optarg);
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for(kvalue=legalkinds;kvalue->name;kvalue++) {
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if(strcmp(kind_name,kvalue->name) == 0) {
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k_flag = kvalue->k_flag;
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break;
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}
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}
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if(kvalue->name == NULL) {
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derror("Invalid format: %s",kind_name);
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return 2;
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}
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}
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break;
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case 'M': /* Determine the name for the main function */
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mainname = nulldup(optarg);
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break;
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case 'B':
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nciterbuffersize = atoi(optarg);
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break;
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case 'P': /* diskless with persistence */
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diskless = 1;
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break;
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case '?':
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usage();
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return(8);
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}
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if(l_flag == 0) {
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l_flag = L_BINARY; /* default */
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/* Treat -k or -o as an implicit -lb assuming no other -l flags */
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if(k_flag == 0 && netcdf_name == NULL)
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syntax_only = 1;
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}
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/* Compute/default the iterator buffer size */
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if(l_flag == L_BINARY) {
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if(nciterbuffersize == 0 )
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nciterbuffersize = DFALTBINNCITERBUFFERSIZE;
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} else {
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if(nciterbuffersize == 0)
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nciterbuffersize = DFALTLANGNCITERBUFFERSIZE;
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}
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#ifndef ENABLE_C
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if(c_flag) {
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fprintf(stderr,"C not currently supported\n");
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exit(1);
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}
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#endif
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#ifndef ENABLE_BINARY
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if(l_flag == L_BINARY) {
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fprintf(stderr,"Binary netcdf not currently supported\n");
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exit(1);
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}
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#endif
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#ifndef ENABLE_JAVA
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if(l_flag == L_JAVA) {
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fprintf(stderr,"Java not currently supported\n");
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exit(1);
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}
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#else
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if(l_flag == L_JAVA && strcmp(mainname,"main")==0)
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mainname = "Main";
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#endif
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#ifndef ENABLE_F77
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if(l_flag == L_F77) {
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fprintf(stderr,"F77 not currently supported\n");
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exit(1);
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}
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#endif
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if(l_flag != L_BINARY)
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diskless = 0;
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argc -= optind;
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argv += optind;
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if (argc > 1) {
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derror ("%s: only one input file argument permitted",progname);
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return(6);
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}
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fp = stdin;
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if (argc > 0 && strcmp(argv[0], "-") != 0) {
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char bom[4];
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size_t count;
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if ((fp = fopen(argv[0], "r")) == NULL) {
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derror ("can't open file %s for reading: ", argv[0]);
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perror("");
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return(7);
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}
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/* Check the leading bytes for an occurrence of a BOM */
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/* re: http://www.unicode.org/faq/utf_bom.html#BOM */
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/* Attempt to read the first four bytes */
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memset(bom,0,sizeof(bom));
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count = fread(bom,1,2,fp);
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if(count == 2) {
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switch (bom[0]) {
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case '\x00':
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case '\xFF':
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case '\xFE':
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/* Only UTF-* is allowed; complain and exit */
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fprintf(stderr,"Input file contains a BOM indicating a non-UTF8 encoding\n");
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return 1;
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case '\xEF':
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/* skip the BOM */
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fread(bom,1,1,fp);
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break;
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default: /* legal printable char, presumably; rewind */
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rewind(fp);
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break;
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}
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}
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cdlname = (char*)emalloc(NC_MAX_NAME);
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cdlname = nulldup(argv[0]);
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if(cdlname != NULL) {
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if(strlen(cdlname) > NC_MAX_NAME)
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cdlname[NC_MAX_NAME] = '\0';
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}
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}
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/* Standard Unidata java interface => usingclassic */
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parse_init();
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ncgin = fp;
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if(debug >= 2) {ncgdebug=1;}
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if(ncgparse() != 0)
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return 1;
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/* Compute the k_flag (1st pass) using rules in the man page (ncgen.1).*/
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#ifndef USE_NETCDF4
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if(enhanced_flag) {
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derror("CDL input is enhanced mode, but --disable-netcdf4 was specified during build");
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return 0;
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}
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#endif
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if(l_flag == L_JAVA || l_flag == L_F77) {
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k_flag = 1;
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if(enhanced_flag) {
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derror("Java or Fortran requires classic model CDL input");
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return 0;
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}
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}
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if(k_flag == 0)
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k_flag = format_flag;
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if(enhanced_flag && k_flag == 0)
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k_flag = 3;
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if(enhanced_flag && k_flag != 3) {
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derror("-k or _Format conflicts with enhanced CDL input");
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return 0;
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}
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if(specials_flag > 0 && k_flag == 0)
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#ifdef USE_NETCDF4
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k_flag = 3;
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#else
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k_flag = 1;
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#endif
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if(k_flag == 0)
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k_flag = 1;
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usingclassic = (k_flag <= 2?1:0);
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/* compute cmode_modifier */
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switch (k_flag) {
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case 1: cmode_modifier = 0; break;
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case 2: cmode_modifier = NC_64BIT_OFFSET; break;
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case 3: cmode_modifier = NC_NETCDF4; break;
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case 4: cmode_modifier = NC_NETCDF4 | NC_CLASSIC_MODEL; break;
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default: ASSERT(0); /* cannot happen */
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}
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if(diskless)
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cmode_modifier |= (NC_DISKLESS|NC_NOCLOBBER);
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processsemantics();
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if(!syntax_only && error_count == 0)
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define_netcdf();
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return 0;
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}
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END_OF_MAIN();
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void
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init_netcdf(void) /* initialize global counts, flags */
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{
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compute_alignments();
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memset((void*)&nullconstant,0,sizeof(NCConstant));
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fillconstant = nullconstant;
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fillconstant.nctype = NC_FILLVALUE;
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codebuffer = bbNew();
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stmt = bbNew();
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error_count = 0; /* Track # of errors */
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}
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