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/*
* Copyright (c) 1993-1995 Vectaport Inc.
* Copyright (c) 1989 Triple Vision, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the names of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The copyright holders make no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
* IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
txtutil.c TeXT storage UTILities
Externals: unsigned int txtstore()
unsigned int txtread()
unsigned int txtopenclose()
unsigned int txtkwsrch()
unsigned int txtprint()
Summary: Routines to manage the text storage table.
Author: Rob Graber 7-89
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "comutil.ci"
#define TXT_STORE_PATH "$comtxt$.$$$"
/* Local globals */
static int Currid = -1;
static int Lastid = -1;
static FILE *fd = NULL;
static char tmpstr[256];
/*!
txtstore STORE TeXT in text table
Summary:
*/
unsigned int txtstore(int new_entry,char * txtstr)
/*!
Return Value: -1 = Error, # = Text ID
Parameters:
Type Name IO Description
---- ---- -- ----------- */
#ifdef DOC
int new_entry ;/* I New entry flag.
1 = Start new entry
0 = Continue previous entry */
char * txtstr ;/* I String to write. */
#endif
/*!
Description:
`txtstore` stores a text string in the text table and returns an
ID for it. If the `new_entry` flag is set a new ID is created and
returned, otherwise `txtstr` is appended to the previous entry.
!*/
#undef TITLE
#define TITLE "txtstore"
{
int index;
/* Check for file open */
if (fd == NULL)
{
/* Text storage file not open */
COMERR_SET(ERR_TXTUT_FNOTOPEN);
return(-1);
}
/* Check for string beginning with internal delimiter */
if ( !strncmp(txtstr, ".!#ID#",6))
{
/* String begins with internal delimiter string */
COMERR_SET(ERR_TXTUT_DELIM);
return(-1);
}
/* Check for new entry */
if (new_entry)
{
Lastid++;
fprintf(fd,".!#ID#%d\n",Lastid);
}
/* Check for multiple \n's */
index = strlen(txtstr) - 1;
if (txtstr[index] == '\n') txtstr[index] = '\0';
/* Write text string */
fprintf(fd,"%s\n",txtstr);
/* Return */
return(Lastid);
}
/*!
txtread READ TeXT from text table
Summary:
*/
unsigned int txtread (
/*!
Return Value: 0 = OK, -1 = ERROR
Parameters:
Type Name IO Description
---- ---- -- -----------*/
unsigned id ,/* I Text ID */
char * txtstr /* I String to write. */
)
/*!
Description:
`txtread` reads a text string from the text table.
If `id` is the same as the previous `id` no seek is
done and the next line from the file is returned (unless it
is the end of the text segment). A -1 value for ID will cause
the current file position to be reset.
!*/
#undef TITLE
#define TITLE "txtread"
{
char *tst, cmpstr[15];
/* Check for file open */
if (fd == NULL)
{
/* Text storage file not open */
COMERR_SET(ERR_TXTUT_FNOTOPEN);
return(-1);
}
/* Check for file reset */
if (id == -1)
{
Currid = -1;
return(0);
}
/* Check for new id */
if (id != Currid)
{
/* Reset current id pointer and seek to beginning of file */
Currid = id;
fseek(fd,0L,SEEK_SET);
/* Search for .!#ID#id delimiter */
sprintf( cmpstr, ".!#ID#%d\n",id);
while( (tst = fgets(txtstr, 256, fd)) != NULL )
if (!strcmp(txtstr, cmpstr)) break;
/* Check for id not found */
if (tst == NULL)
{
Currid = -1;
return(-1);
}
}
/* Read next line of file */
tst = fgets(txtstr, 256, fd);
/* Check for end of text entry (or EOF) */
if ( (!strncmp(txtstr, ".!#ID#",6)) || (tst == NULL) )
{
Currid = -1;
txtstr[0] = '\0';
return(-1);
}
/* Return */
return(0);
}
/*!
txtopenclose TeXT table file OPEN and CLOSE
Summary:
*/
unsigned int txtopenclose(int openclose)
/*!
Return Value: 0 = OK, -1 = ERROR
Parameters:
Type Name IO Description
---- ---- -- ----------- */
#ifdef DOC
int openclose ;/* I Txt file open close flag.
0 = open
1 = close */
#endif
/*!
Description:
`txtopenclose` opens or closes the txt file based on the `openclose` flag.
!*/
#undef TITLE
#define TITLE "txtopenclose"
{
/* Check for open/close */
if (openclose == 0)
{
/* If file is not already open - open it */
if (fd == NULL)
{
fd = fopen(TXT_STORE_PATH,"w+");
if (fd == NULL)
{
/* Error opening text storage file */
COMERR_SET(ERR_TXTUT_FOPEN);
return(-1);
}
}
}
else
/* Close file and remove */
if (fd != NULL)
{
fclose(fd);
unlink(TXT_STORE_PATH);
}
return(0);
}
/*!
txtkwsrch TeXT Key Word SeaRCH
Summary:
*/
unsigned int txtkwsrch(char * keyword,int bol,char * rdstr)
/*!
Return Value: -1 = ERROR, # = text ID
Parameters:
Type Name IO Description
---- ---- -- ----------- */
#ifdef DOC
char * keyword ;/* I String to search table for */
int bol ;/* I Search flag
0 = whole line
1 = beginning only */
char * rdstr ;/* IO String to return value in.
Must be alloced in calling program.
If rdstr is NULL an internal string
is used. */
#endif
/*!
Description:
`txtkwsrch` searches the text table and returns the first next ID
containing `keyword`. Use a NULL keyword to reset the file.
NOTE: The file position can be changed by reading or writing using txtstore
and txtread. The file needs to be opened using txtopenclose prior to calling
kwsearch.
!*/
#undef TITLE
#define TITLE "txtkwsrch"
{
char *tst, *rdptr;
int id, index;
/* Check for file open */
if (fd == NULL)
{
/* Text storage file not open */
COMERR_SET(ERR_TXTUT_FNOTOPEN);
return(-1);
}
/* Check for file reset */
if (keyword == NULL)
{
fseek(fd,0L,SEEK_SET);
return(0);
}
/* Set which read buffer to use */
if (rdstr == NULL)
rdptr = tmpstr;
else
rdptr = rdstr;
id = -1;
while( (tst = fgets(rdptr, 256, fd)) != NULL )
{
/* Check for .!#ID#id delimiter */
if (!strncmp(rdptr, ".!#ID#",6))
id = atoi(&rdptr[6]);
else
{
if (bol)
{
/* One check only */
if (!strncmp(rdptr, keyword, strlen(keyword)))
if (id != -1) return(id);
}
else
{
/* Search line for string */
for (index = 0; index < strlen(rdptr); index++)
if (!strncmp(&rdptr[index], keyword, strlen(keyword)))
if (id != -1) return(id);
}
}
}
return(-1);
}
#if 0
/*!
txtprint TeXT PRINT
Summary:
*/
unsigned int txtprint(unsigned id,char * ignorestr,unsigned pause,
unsigned * nlines)
/*!
Return Value: -1 if not found, 0 = OK
Parameters:
Type Name IO Description
---- ---- -- ----------- */
#ifdef DOC
unsigned id ;/* I ID to print */
char * ignorestr ;/* I Strings beginning with ignorestr
are not printed */
unsigned pause ;/* I Pause afeter 22 lines flag.
0 = no pause */
unsigned *nlines ;/* I/0 Number of lines printed prior to
this call of txtrpint. Updated on
output */
#endif
/*!
Description:
`txtprint` searchs the text table and prints out entry `id`.
Any string beginning with `ignorestr` are NOT printed. This is
useful for user-defined delimiters within a block of text, specifically
the .!#KW# identifiers for COMTERP.
!*/
#undef TITLE
#define TITLE "txtprint"
{
int i, xsize, ysize;
/* Illegal ID value */
if (id == -1) return(-1);
/* Constants */
crt_size(&xsize, &ysize);
/* Find first line */
txtread(-1,tmpstr);
if (txtread(id, tmpstr) == -1) return(-1);
txtread(-1,tmpstr);
/* Print until end of id */
for (i = *nlines; txtread(id, tmpstr) != -1; i++)
{
if (strncmp(ignorestr, tmpstr, strlen(ignorestr)))
{
printf("%s",tmpstr);
*nlines = *nlines+1;
if (pause)
if ( (i%ysize == 0) && (i != 0) )
key_to_continue();
}
}
return(0);
}
#endif
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