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Showing content from https://scip.zib.de/doc/html/reader__diff_8c_source.php below:

SCIP Doxygen Documentation: reader_diff.c Source File

61#define READER_NAME "diffreader" 62#define READER_DESC "file reader for changes in the LP file" 63#define READER_EXTENSION "diff" 68#define LP_MAX_LINELEN 65536 69#define LP_MAX_PUSHEDTOKENS 2 70#define LP_INIT_COEFSSIZE 8192 128

assert(lpinput !=

NULL

);

130 SCIPerrorMessage

(

"Syntax error in line %d ('%s'): %s \n"

, lpinput->linenumber, lpinput->token, msg);

131 if

( lpinput->linebuf[lpinput->linebufsize - 1] ==

'\n'

)

139

(void)

SCIPsnprintf

(formatstr, 256,

" %%%ds\n"

, lpinput->linepos);

141

lpinput->section =

LP_END

;

142

lpinput->haserror =

TRUE

;

151

assert(lpinput !=

NULL

);

153 return

lpinput->haserror;

211

assert(hasdot !=

NULL

);

212

assert(exptype !=

NULL

);

214 if

( isdigit((

unsigned char

)c) )

216 else if

( (*exptype ==

LP_EXP_NONE

) && !(*hasdot) && (c ==

'.'

) && isdigit((

unsigned char

)nextc) )

221 else if

( !firstchar && (*exptype ==

LP_EXP_NONE

) && (c ==

'e'

|| c ==

'E'

) )

223 if

( nextc ==

'+'

|| nextc ==

'-'

)

228 else if

( isdigit((

unsigned char

)nextc) )

234 else if

( (*exptype ==

LP_EXP_SIGNED

) && (c ==

'+'

|| c ==

'-'

) )

254

assert(lpinput !=

NULL

);

257

lpinput->linepos = 0;

258

lpinput->linebuf[lpinput->linebufsize - 2] =

'\0'

;

260 if

(

SCIPfgets

(lpinput->linebuf, lpinput->linebufsize, lpinput->file) ==

NULL

)

268

lpinput->linenumber++;

271 while

( lpinput->linebuf[lpinput->linebufsize - 2] !=

'\0'

)

278

lpinput->linebuf[newsize-2] =

'\0'

;

279 if

(

SCIPfgets

(lpinput->linebuf + lpinput->linebufsize - 1, newsize - lpinput->linebufsize + 1, lpinput->file) ==

NULL

)

281

lpinput->linebufsize = newsize;

283

lpinput->linebuf[lpinput->linebufsize - 1] =

'\0'

;

290

commentstart = strchr(lpinput->linebuf,

commentchars

[i]);

291 if

( commentstart !=

NULL

)

293

*commentstart =

'\0'

;

294

*(commentstart+1) =

'\0'

;

313

*pointer1 = *pointer2;

329

assert(lpinput !=

NULL

);

330

assert(lpinput->linepos < lpinput->linebufsize);

333 if

( lpinput->npushedtokens > 0 )

335 swapPointers

(&lpinput->token, &lpinput->pushedtokens[lpinput->npushedtokens-1]);

336

lpinput->npushedtokens--;

338 SCIPdebugMsg

(

scip

"(line %d) read token again: '%s'\n"

, lpinput->linenumber, lpinput->token);

343

buf = lpinput->linebuf;

346 if

( buf[lpinput->linepos] ==

'\0'

)

350

lpinput->section =

LP_END

;

354

assert(lpinput->linepos == 0);

356

buf = lpinput->linebuf;

361

assert(lpinput->linepos < lpinput->linebufsize);

363

assert(buf[lpinput->linepos] !=

'\0'

);

368 if

(

isValueChar

(buf[lpinput->linepos], buf[lpinput->linepos+1],

TRUE

, &hasdot, &exptype) )

376

lpinput->token[tokenlen] = buf[lpinput->linepos];

380 while

(

isValueChar

(buf[lpinput->linepos], buf[lpinput->linepos+1],

FALSE

, &hasdot, &exptype) );

389

lpinput->token[tokenlen] = buf[lpinput->linepos];

392 if

( tokenlen == 1 &&

isTokenChar

(lpinput->token[0]) )

401 if

( tokenlen >= 1 && lpinput->token[tokenlen-1] ==

'^'

&& buf[lpinput->linepos] ==

'2'

)

406

&& (lpinput->token[tokenlen-1] ==

'<'

|| lpinput->token[tokenlen-1] ==

'>'

|| lpinput->token[tokenlen-1] ==

'='

)

407

&& buf[lpinput->linepos] ==

'='

)

411 else if

( lpinput->token[tokenlen-1] ==

'='

&& (buf[lpinput->linepos] ==

'<'

|| buf[lpinput->linepos] ==

'>'

) )

413

lpinput->token[tokenlen-1] = buf[lpinput->linepos];

418

lpinput->token[tokenlen] =

'\0'

;

420 SCIPdebugMsg

(

scip

"(line %d) read token: '%s'\n"

, lpinput->linenumber, lpinput->token);

431

assert(lpinput !=

NULL

);

434 swapPointers

(&lpinput->pushedtokens[lpinput->npushedtokens], &lpinput->token);

435

lpinput->npushedtokens++;

444

assert(lpinput !=

NULL

);

447 swapPointers

(&lpinput->pushedtokens[lpinput->npushedtokens], &lpinput->tokenbuf);

448

lpinput->npushedtokens++;

457

assert(lpinput !=

NULL

);

472

assert(lpinput !=

NULL

);

481

iscolon = (*lpinput->token ==

':'

);

492

len = strlen(lpinput->token);

496 if

( len > 1 && (len < 9 || len == 15) )

501 while

( lpinput->token[c] !=

'\0'

)

503

token[c] = toupper(lpinput->token[c]);

509 if

( (len == 3 && strcmp(token,

"MIN"

) == 0)

510

|| (len == 7 && strcmp(token,

"MINIMUM"

) == 0)

511

|| (len == 8 && strcmp(token,

"MINIMIZE"

) == 0) )

513 SCIPdebugMsg

(

scip

"(line %d) new section: OBJECTIVE\n"

, lpinput->linenumber);

519 if

( (len == 3 && strcmp(token,

"MAX"

) == 0)

520

|| (len == 7 && strcmp(token,

"MAXIMUM"

) == 0)

521

|| (len == 8 && strcmp(token,

"MAXIMIZE"

) == 0) )

523 SCIPdebugMsg

(

scip

"(line %d) new section: OBJECTIVE\n"

, lpinput->linenumber);

529 if

( len == 3 && strcmp(token,

"END"

) == 0 )

531 SCIPdebugMsg

(

scip

"(line %d) new section: END\n"

, lpinput->linenumber);

532

lpinput->section =

LP_END

;

547

assert(lpinput !=

NULL

);

548

assert(sign !=

NULL

);

549

assert(*sign == +1 || *sign == -1);

551 if

( lpinput->token[1] ==

'\0'

)

553 if

( *lpinput->token ==

'+'

)

555 else if

( *lpinput->token ==

'-'

)

573

assert(lpinput !=

NULL

);

574

assert(value !=

NULL

);

586

val = strtod(lpinput->token, &endptr);

587 if

( endptr != lpinput->token && *endptr ==

'\0'

)

604

assert(lpinput !=

NULL

);

606 if

( strcmp(lpinput->token,

"<"

) == 0 )

612 else if

( strcmp(lpinput->token,

">"

) == 0 )

618 else if

( strcmp(lpinput->token,

"="

) == 0 )

636

assert(name !=

NULL

);

637

assert(var !=

NULL

);

654

assert(lpinput !=

NULL

);

688

assert(lpinput !=

NULL

);

689

assert(name !=

NULL

);

690

assert(coefssize !=

NULL

);

691

assert(vars !=

NULL

);

692

assert(coefs !=

NULL

);

693

assert(ncoefs !=

NULL

);

694

assert(newsection !=

NULL

);

701

*newsection =

FALSE

;

719 if

( strcmp(lpinput->token,

":"

) == 0 )

725 SCIPdebugMsg

(

scip

"(line %d) read constraint name: '%s'\n"

, lpinput->linenumber, name);

757 if

(

isSign

(lpinput, &coefsign) )

759 SCIPdebugMsg

(

scip

"(line %d) read coefficient sign: %+d\n"

, lpinput->linenumber, coefsign);

767 SCIPdebugMsg

(

scip

"(line %d) read coefficient value: %g with sign %+d\n"

, lpinput->linenumber, coef, coefsign);

794 if

( (isobjective || (!havevalue && !havesign)) &&

isNewSection

(

scip

, lpinput) )

796 if

( havesign && !havevalue )

798 SCIPwarningMessage

(

scip

"skipped single sign %c without value or variable in objective\n"

, coefsign == 1 ?

'+'

'-'

);

800 else if

( isobjective && havevalue && !

SCIPisZero

(

scip

, coef) )

810 if

( *lpinput->token ==

'['

)

812 syntaxError

(

scip

, lpinput,

"diff reader does not support quadratic objective function."

);

817 if

( *ncoefs > 0 && !havesign )

819 syntaxError

(

scip

, lpinput,

"expected sign ('+' or '-') or sense ('<' or '>')."

);

824 if

( *lpinput->token ==

'^'

)

826 syntaxError

(

scip

, lpinput,

"diff reader does not support quadratic objective function."

);

840 if

( *ncoefs >= *coefssize )

844

oldcoefssize = *coefssize;

846

*coefssize =

MAX

(*coefssize, (*ncoefs)+1);

850

assert(*ncoefs < *coefssize);

853

(*vars)[*ncoefs] = var;

854

(*coefs)[*ncoefs] = coefsign * coef;

882

assert(lpinput !=

NULL

);

902 const char

* filename

905

assert(lpinput !=

NULL

);

908

lpinput->file =

SCIPfopen

(filename,

"r"

);

909 if

( lpinput->file ==

NULL

)

930 switch

( lpinput->section )

962

assert(reader !=

NULL

);

1015 const char

* filename,

1023

assert(reader !=

NULL

);

1026

lpinput.file =

NULL

;

1028

lpinput.linebuf[0] =

'\0'

;

1030

lpinput.probname[0] =

'\0'

;

1031

lpinput.objname[0] =

'\0'

;

1033

lpinput.token[0] =

'\0'

;

1035

lpinput.tokenbuf[0] =

'\0'

;

1041

lpinput.npushedtokens = 0;

1042

lpinput.linenumber = 0;

1043

lpinput.linepos = 0;

1046

lpinput.haserror =

FALSE

;

1061 if

( lpinput.haserror )

#define SCIP_CALL_ABORT(x)

SCIP_FILE * SCIPfopen(const char *path, const char *mode)

int SCIPfclose(SCIP_FILE *fp)

char * SCIPfgets(char *s, int size, SCIP_FILE *stream)

SCIP_RETCODE SCIPreadDiff(SCIP *scip, SCIP_READER *reader, const char *filename, SCIP_RESULT *result)

SCIP_RETCODE SCIPincludeReaderDiff(SCIP *scip)

SCIP_STAGE SCIPgetStage(SCIP *scip)

SCIP_RETCODE SCIPchgReoptObjective(SCIP *scip, SCIP_OBJSENSE objsense, SCIP_VAR **vars, SCIP_Real *coefs, int nvars)

SCIP_VAR * SCIPfindVar(SCIP *scip, const char *name)

void SCIPverbMessage(SCIP *scip, SCIP_VERBLEVEL msgverblevel, FILE *file, const char *formatstr,...)

void SCIPwarningMessage(SCIP *scip, const char *formatstr,...)

#define SCIPfreeBlockMemoryArray(scip, ptr, num)

int SCIPcalcMemGrowSize(SCIP *scip, int num)

#define SCIPallocBlockMemoryArray(scip, ptr, num)

#define SCIPreallocBlockMemoryArray(scip, ptr, oldnum, newnum)

#define SCIPfreeBlockMemoryArrayNull(scip, ptr, num)

SCIP_RETCODE SCIPincludeReaderBasic(SCIP *scip, SCIP_READER **readerptr, const char *name, const char *desc, const char *extension, SCIP_READERDATA *readerdata)

SCIP_RETCODE SCIPsetReaderCopy(SCIP *scip, SCIP_READER *reader, SCIP_DECL_READERCOPY((*readercopy)))

SCIP_RETCODE SCIPsetReaderFree(SCIP *scip, SCIP_READER *reader, SCIP_DECL_READERFREE((*readerfree)))

const char * SCIPreaderGetName(SCIP_READER *reader)

SCIP_RETCODE SCIPsetReaderRead(SCIP *scip, SCIP_READER *reader, SCIP_DECL_READERREAD((*readerread)))

SCIP_Bool SCIPisReoptEnabled(SCIP *scip)

SCIP_RETCODE SCIPfreeReoptSolve(SCIP *scip)

SCIP_RETCODE SCIPfreeTransform(SCIP *scip)

SCIP_Real SCIPinfinity(SCIP *scip)

SCIP_Bool SCIPisZero(SCIP *scip, SCIP_Real val)

const char * SCIPvarGetName(SCIP_VAR *var)

int SCIPstrcasecmp(const char *s1, const char *s2)

int SCIPsnprintf(char *t, int len, const char *s,...)

void SCIPprintSysError(const char *message)

int SCIPmemccpy(char *dest, const char *src, char stop, unsigned int cnt)

#define BMSclearMemoryArray(ptr, num)

wrapper functions to map file i/o to standard or zlib file i/o

struct SCIP_File SCIP_FILE

public methods for message output

public data structures and miscellaneous methods

public methods for input file readers

public methods for problem variables

#define LP_INIT_COEFSSIZE

static SCIP_DECL_READERCOPY(readerCopyDiff)

static SCIP_Bool isSign(LPINPUT *lpinput, int *sign)

static SCIP_Bool isNewSection(SCIP *scip, LPINPUT *lpinput)

static SCIP_Bool hasError(LPINPUT *lpinput)

static void pushToken(LPINPUT *lpinput)

static SCIP_Bool getNextLine(SCIP *scip, LPINPUT *lpinput)

static SCIP_RETCODE getVariable(SCIP *scip, char *name, SCIP_VAR **var)

static void swapTokenBuffer(LPINPUT *lpinput)

static SCIP_Bool getNextToken(SCIP *scip, LPINPUT *lpinput)

static const char commentchars[]

static SCIP_Bool isValueChar(char c, char nextc, SCIP_Bool firstchar, SCIP_Bool *hasdot, LPEXPTYPE *exptype)

#define LP_MAX_PUSHEDTOKENS

static SCIP_DECL_READERREAD(readerReadDiff)

static SCIP_RETCODE readObjective(SCIP *scip, LPINPUT *lpinput)

static SCIP_Bool isValue(SCIP *scip, LPINPUT *lpinput, SCIP_Real *value)

static void syntaxError(SCIP *scip, LPINPUT *lpinput, const char *msg)

static void pushBufferToken(LPINPUT *lpinput)

static SCIP_RETCODE readCoefficients(SCIP *scip, LPINPUT *lpinput, SCIP_Bool isobjective, char *name, int *coefssize, SCIP_VAR ***vars, SCIP_Real **coefs, int *ncoefs, SCIP_Bool *newsection)

static SCIP_Bool isSense(LPINPUT *lpinput, LPSENSE *sense)

static SCIP_Bool isDelimChar(char c)

static void swapPointers(char **pointer1, char **pointer2)

static SCIP_DECL_READERFREE(readerFreeDiff)

static SCIP_RETCODE readStart(SCIP *scip, LPINPUT *lpinput)

static SCIP_RETCODE readDiffFile(SCIP *scip, LPINPUT *lpinput, const char *filename)

static SCIP_Bool isTokenChar(char c)

public methods for memory management

public methods for message handling

public methods for numerical tolerances

public methods for global and local (sub)problems

public methods for reader plugins

enum SCIP_Objsense SCIP_OBJSENSE

enum SCIP_Result SCIP_RESULT

enum SCIP_Retcode SCIP_RETCODE

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