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feread.cc File Reference
#include "kernel/mod2.h"
#include <errno.h>
#include "omalloc/omalloc.h"
#include "misc/options.h"
#include "kernel/oswrapper/feread.h"
#include <unistd.h>
#include "Singular/ipid.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/file.h>
#include <sys/stat.h>

Go to the source code of this file.

Macros

#define STDOUT_FILENO   1
 
#define rl_filename_completion_function   filename_completion_function
 
#define rl_completion_matches   completion_matches
 
#define x_rl_line_buffer   (*fe_rl_line_buffer)
 
#define x_rl_completion_matches   (*fe_completion_matches)
 
#define x_rl_filename_completion_function   (*fe_filename_completion_function)
 

Typedefs

typedef char *(* RL_PROC) (const char *, int)
 
typedef char ** CPPFunction()
 
typedef char *(* PROC) ()
 
typedef char ** RL_CPPFunction(const char *, int, int)
 

Functions

static char * fe_fgets_stdin_init (const char *pr, char *s, int size)
 
char * iiArithGetCmd (int)
 
char * command_generator (char *text, int state)
 
char * rl_filename_completion_function (const char *, int)
 
char ** rl_completion_matches (const char *, RL_PROC)
 
char * readline (const char *)
 
void add_history (char *)
 
int write_history ()
 
void using_history ()
 
int read_history (char *)
 
int history_total_bytes ()
 
char * fe_fgets_stdin_rl (const char *pr, char *s, int size)
 
int fe_init_dyn_rl ()
 
char ** singular_completion (char *text, int start, int end)
 
char * fe_fgets_stdin_fe (const char *pr, char *s, int size)
 
char * fe_fgets_stdin_emu (const char *pr, char *s, int size)
 
char * fe_fgets_stdin_drl (const char *pr, char *s, int size)
 
char * fe_fgets (const char *pr, char *s, int size)
 
char * fe_fgets_dummy (const char *, char *, int)
 

Variables

char *(* fe_fgets_stdin )(const char *pr, char *s, int size) = fe_fgets_stdin_init
 
EXTERN_VAR char * rl_readline_name
 
EXTERN_VAR char * rl_line_buffer
 
EXTERN_VAR CPPFunctionrl_attempted_completion_function
 
EXTERN_VAR FILE * rl_outstream
 
char *(* fe_filename_completion_function )()
 
char *(* fe_readline )(char *)
 
VAR void(* fe_add_history )(char *)
 
VAR char ** fe_rl_readline_name
 
VAR char ** fe_rl_line_buffer
 
char **(* fe_completion_matches )(...)
 
VAR CPPFunction ** fe_rl_attempted_completion_function
 
VAR FILE ** fe_rl_outstream
 
VAR int(* fe_write_history )()
 
VAR int(* fe_history_total_bytes )()
 
VAR void(* fe_using_history )()
 
VAR int(* fe_read_history )(char *)
 

Macro Definition Documentation

◆ rl_completion_matches

#define rl_completion_matches   completion_matches

Definition at line 120 of file feread.cc.

◆ rl_filename_completion_function

#define rl_filename_completion_function   filename_completion_function

Definition at line 119 of file feread.cc.

◆ STDOUT_FILENO

#define STDOUT_FILENO   1

Definition at line 41 of file feread.cc.

◆ x_rl_completion_matches

#define x_rl_completion_matches   (*fe_completion_matches)

◆ x_rl_filename_completion_function

#define x_rl_filename_completion_function   (*fe_filename_completion_function)

◆ x_rl_line_buffer

#define x_rl_line_buffer   (*fe_rl_line_buffer)

Typedef Documentation

◆ CPPFunction

typedef char** CPPFunction()

Definition at line 127 of file feread.cc.

◆ PROC

typedef char*(* PROC) ()

Definition at line 140 of file feread.cc.

◆ RL_CPPFunction

typedef char** RL_CPPFunction(const char *, int, int)

Definition at line 142 of file feread.cc.

◆ RL_PROC

typedef char*(* RL_PROC) (const char *, int)

Definition at line 104 of file feread.cc.

Function Documentation

◆ add_history()

void add_history ( char *  )

◆ command_generator()

char* command_generator ( char *  text,
int  state 
)

Definition at line 50 of file feread.cc.

51 {
52  STATIC_VAR int list_index, len;
54  const char *name;
55 
56  /* If this is a new word to complete, initialize now. This includes
57  saving the length of TEXT for efficiency, and initializing the index
58  variable to 0. */
59  if (state==0)
60  {
61  list_index = 1;
62  len = strlen (text);
63  h=basePack->idroot;
64  }
65 
66  /* Return the next name which partially matches from the command list. */
67  while ((name = iiArithGetCmd(list_index))!=NULL)
68  {
69  list_index++;
70 
71  if (strncmp (name, text, len) == 0)
72  return (strdup(name));
73  }
74  if (len>1)
75  {
76  while (h!=NULL)
77  {
78  name=h->id;
79  h=h->next;
80  if (strncmp (name, text, len) == 0)
81  return (strdup(name));
82  }
83  }
84  /* If no names matched, then return NULL. */
85  return ((char *)NULL);
86 }
Definition: idrec.h:35
char name(const Variable &v)
Definition: factory.h:196
char * iiArithGetCmd(int)
Definition: iparith.cc:9771
#define STATIC_VAR
Definition: globaldefs.h:7
VAR package basePack
Definition: ipid.cc:58
STATIC_VAR Poly * h
Definition: janet.cc:971
#define strdup
Definition: omAllocFunc.c:19
#define NULL
Definition: omList.c:12

◆ fe_fgets()

char* fe_fgets ( const char *  pr,
char *  s,
int  size 
)

Definition at line 306 of file feread.cc.

307 {
308  if (BVERBOSE(V_PROMPT))
309  {
310  fputs(pr,stdout);
311  }
312  mflush();
313  errno=0;
314  char *line=fgets(s,size,stdin);
315  if (line!=NULL)
316  {
317  for (int i=strlen(line)-1;i>=0;i--) line[i]=line[i]&127;
318  }
319  else
320  {
321  /* NULL can mean various things... */
322  switch(errno)
323  {
324  case 0: return NULL; /*EOF */
325  case EBADF: return NULL; /* stdin got closed */
326  case EINTR: return strcpy(s,"\n"); /* CTRL-C or other signal */
327  default: /* other error */
328  {
329  int errsv = errno;
330  fprintf(stderr,"fgets() failed with errno %d\n%s\n",errsv,strerror(errsv));
331  return NULL;
332  }
333  }
334  }
335  return line;
336 }
int size(const CanonicalForm &f, const Variable &v)
int size ( const CanonicalForm & f, const Variable & v )
Definition: cf_ops.cc:600
int i
Definition: cfEzgcd.cc:132
const CanonicalForm int s
Definition: facAbsFact.cc:51
#define BVERBOSE(a)
Definition: options.h:34
#define V_PROMPT
Definition: options.h:53
#define mflush()
Definition: reporter.h:58

◆ fe_fgets_dummy()

char* fe_fgets_dummy ( const char *  pr,
char *  s,
int  size 
)

Definition at line 447 of file feread.cc.

448 {
449  return NULL;
450 }

◆ fe_fgets_stdin_drl()

char* fe_fgets_stdin_drl ( const char *  pr,
char *  s,
int  size 
)

Definition at line 266 of file feread.cc.

267 {
268  if (!BVERBOSE(V_PROMPT))
269  {
270  pr="";
271  }
272  mflush();
273 
274  char *line;
275  line = (*fe_readline) ((char*)pr);
276 
277  if (line==NULL)
278  return NULL;
279 
280  int l=strlen(line);
281  for (int i=l-1;i>=0;i--) line[i]=line[i]&127;
282 
283  if (*line!='\0')
284  {
285  (*fe_add_history) (line);
286  }
287  if (l>=size-1)
288  {
289  strncpy(s,line,size);
290  }
291  else
292  {
293  strncpy(s,line,l);
294  s[l]='\n';
295  s[l+1]='\0';
296  }
297  free (line);
298 
299  return s;
300 }
int l
Definition: cfEzgcd.cc:100
#define free
Definition: omAllocFunc.c:14

◆ fe_fgets_stdin_emu()

char* fe_fgets_stdin_emu ( const char *  pr,
char *  s,
int  size 
)

Definition at line 250 of file feread.cc.

251 {
252  if (!BVERBOSE(V_PROMPT))
253  {
254  pr="";
255  }
256  mflush();
257  return fe_fgets_stdin_fe(pr,s,size);
258 }
char * fe_fgets_stdin_fe(const char *pr, char *s, int size)

◆ fe_fgets_stdin_fe()

char* fe_fgets_stdin_fe ( const char *  pr,
char *  s,
int  size 
)

◆ fe_fgets_stdin_init()

static char * fe_fgets_stdin_init ( const char *  pr,
char *  s,
int  size 
)
static

Definition at line 341 of file feread.cc.

342 {
343 #if (defined(HAVE_READLINE) || defined(HAVE_LIBREADLINE)) && !defined(HAVE_DYN_RL) && !defined(HAVE_FEREAD)
344  /* Allow conditional parsing of the ~/.inputrc file. */
345  rl_readline_name = (char*)"Singular";
346  /* Tell the completer that we want a crack first. */
347 #ifdef USE_READLINE4
348  rl_attempted_completion_function = (rl_completion_func_t *)singular_completion;
349 #else
351 #endif
352 
353  /* set the output stream */
354  if(!isatty(STDOUT_FILENO))
355  {
356  #ifdef atarist
357  rl_outstream = fopen( "/dev/tty", "w" );
358  #else
359  char *fn=ttyname(fileno(stdin));//if stdout is not a tty, maybe stdin is?
360  if (fn!=NULL) rl_outstream = fopen( fn, "w" );
361  #endif
362  }
363 
364  if(isatty(fileno(stdin)))
365  {
366  /* try to read a history */
367  using_history();
368  char *p = getenv("SINGULARHIST");
369  if (p != NULL)
370  {
371  read_history (p);
372  }
374  return(fe_fgets_stdin_rl(pr,s,size));
375  }
376  else
377  {
379  return(fe_fgets(pr,s,size));
380  }
381 #endif
382 #ifdef HAVE_DYN_RL
383  /* do dynamic loading */
384  int res=fe_init_dyn_rl();
385  if (res!=0)
386  {
387  //if (res==1)
388  // WarnS("dynamic loading of libreadline failed");
389  //else
390  // Warn("dynamic loading failed: %d\n",res);
391  if (res!=1)
392  Warn("dynamic loading failed: %d\n",res);
393  #ifdef HAVE_FEREAD
395  #else
397  #endif
398  return fe_fgets_stdin(pr,s,size);
399  }
400  else if (isatty(STDIN_FILENO))/*and could load libreadline: */
401  {
402  /* Allow conditional parsing of the ~/.inputrc file. */
403  *fe_rl_readline_name = "Singular";
404  /* Tell the completer that we want a crack first. */
406  /* try to read a history */
407  (*fe_using_history)();
408  char *p = getenv("SINGULARHIST");
409  if (p != NULL)
410  {
411  (*fe_read_history) (p);
412  }
413 
414  /* set the output stream */
415  if(!isatty(STDOUT_FILENO))
416  {
417  #ifdef atarist
418  *fe_rl_outstream = fopen( "/dev/tty", "w" );
419  #else
420  char *fn=ttyname(fileno(stdin));//if stdout is not a tty, maybe stdin is?
421  if (fn!=NULL) *fe_rl_outstream = fopen( fn, "w" );
422  #endif
423  }
425  return fe_fgets_stdin_drl(pr,s,size);
426  }
427  else
428  {
430  return fe_fgets(pr,s,size);
431  }
432 #else
433  #if !defined(HAVE_READLINE) && defined(HAVE_FEREAD)
435  return(fe_fgets_stdin_emu(pr,s,size));
436  #else
438  return(fe_fgets(pr,s,size));
439  #endif
440 #endif
441 }
int p
Definition: cfModGcd.cc:4080
#define Warn
Definition: emacs.cc:77
CanonicalForm res
Definition: facAbsFact.cc:60
char * getenv()
EXTERN_VAR CPPFunction * rl_attempted_completion_function
Definition: feread.cc:130
EXTERN_VAR FILE * rl_outstream
Definition: feread.cc:131
char * fe_fgets_stdin_emu(const char *pr, char *s, int size)
Definition: feread.cc:250
VAR char ** fe_rl_readline_name
Definition: feread.cc:163
char ** singular_completion(char *text, int start, int end)
Definition: feread.cc:175
char ** CPPFunction()
Definition: feread.cc:127
char *(* fe_fgets_stdin)(const char *pr, char *s, int size)
Definition: feread.cc:30
char * fe_fgets(const char *pr, char *s, int size)
Definition: feread.cc:306
VAR CPPFunction ** fe_rl_attempted_completion_function
Definition: feread.cc:166
int read_history(char *)
char * fe_fgets_stdin_drl(const char *pr, char *s, int size)
Definition: feread.cc:266
char * fe_fgets_stdin_rl(const char *pr, char *s, int size)
#define STDOUT_FILENO
Definition: feread.cc:41
EXTERN_VAR char * rl_readline_name
Definition: feread.cc:124
void using_history()
VAR FILE ** fe_rl_outstream
Definition: feread.cc:167
int fe_init_dyn_rl()
Definition: fereadl.c:755
#define STDIN_FILENO
Definition: fereadl.c:51

◆ fe_fgets_stdin_rl()

char* fe_fgets_stdin_rl ( const char *  pr,
char *  s,
int  size 
)

◆ fe_init_dyn_rl()

int fe_init_dyn_rl ( )

Definition at line 755 of file fereadl.c.

756 {
757  int res=0;
758  loop
759  {
760  fe_rl_hdl=dynl_open("libreadline.so");
761  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.2");
762  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.3");
763  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.4");
764  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.5");
765  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.6");
766  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.7");
767  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.8");
768  if (fe_rl_hdl==NULL) fe_rl_hdl=dynl_open("libreadline.so.9");
769  if (fe_rl_hdl==NULL) { return 1;}
770 
772  dynl_sym(fe_rl_hdl, "filename_completion_function");
773  if (fe_filename_completion_function==NULL) { res=3; break; }
774  fe_readline=dynl_sym(fe_rl_hdl,"readline");
775  if (fe_readline==NULL) { res=4; break; }
776  fe_add_history=dynl_sym(fe_rl_hdl,"add_history");
777  if (fe_add_history==NULL) { res=5; break; }
778  fe_rl_readline_name=(char**)dynl_sym(fe_rl_hdl,"rl_readline_name");
779  if (fe_rl_readline_name==NULL) { res=6; break; }
780  fe_rl_line_buffer=(char**)dynl_sym(fe_rl_hdl,"rl_line_buffer");
781  if (fe_rl_line_buffer==NULL) { res=7; break; }
782  fe_completion_matches=dynl_sym(fe_rl_hdl,"completion_matches");
783  if (fe_completion_matches==NULL) { res=8; break; }
785  dynl_sym(fe_rl_hdl,"rl_attempted_completion_function");
786  if (fe_rl_attempted_completion_function==NULL) { res=9; break; }
787  fe_rl_outstream=(FILE**)dynl_sym(fe_rl_hdl,"rl_outstream");
788  if (fe_rl_outstream==NULL) { res=10; break; }
789  fe_write_history=dynl_sym(fe_rl_hdl,"write_history");
790  if (fe_write_history==NULL) { res=11; break; }
791  fe_history_total_bytes=dynl_sym(fe_rl_hdl,"history_total_bytes");
792  if (fe_history_total_bytes==NULL) { res=12; break; }
793  fe_using_history=dynl_sym(fe_rl_hdl,"using_history");
794  if (fe_using_history==NULL) { res=13; break; }
795  fe_read_history=dynl_sym(fe_rl_hdl,"read_history");
796  if (fe_read_history==NULL) { res=14; break; }
797  break;
798  }
799  if (res!=0) dynl_close(fe_rl_hdl);
800  else
801  {
802  char *p;
803  /* more init stuff: */
804  /* Allow conditional parsing of the ~/.inputrc file. */
805  (*fe_rl_readline_name) = "Singular";
806  /* Tell the completer that we want a crack first. */
807  (*fe_rl_attempted_completion_function) = (CPPFunction *)singular_completion;
808  /* try to read a history */
809  (*fe_using_history)();
810  p = getenv("SINGULARHIST");
811  if (p != NULL)
812  {
813  (*fe_read_history) (p);
814  }
815  }
816  return res;
817 }
VAR char ** fe_rl_readline_name
Definition: fereadl.c:716
char ** singular_completion(char *text, int start, int end)
Definition: fereadl.c:735
VAR char ** fe_rl_line_buffer
Definition: fereadl.c:717
char ** CPPFunction()
Definition: fereadl.c:711
VAR int(* fe_read_history)()
Definition: fereadl.c:724
VAR void(* fe_add_history)()
Definition: fereadl.c:715
VAR int(* fe_write_history)()
Definition: fereadl.c:721
VAR void(* fe_using_history)()
Definition: fereadl.c:723
char **(* fe_completion_matches)()
Definition: fereadl.c:718
VAR CPPFunction ** fe_rl_attempted_completion_function
Definition: fereadl.c:719
VAR int(* fe_history_total_bytes)()
Definition: fereadl.c:722
VAR void * fe_rl_hdl
Definition: fereadl.c:726
char *(* fe_readline)()
Definition: fereadl.c:714
VAR FILE ** fe_rl_outstream
Definition: fereadl.c:720
char *(* fe_filename_completion_function)()
Definition: fereadl.c:713
void * dynl_sym(void *handle, const char *symbol)
Definition: mod_raw.cc:159
int dynl_close(void *handle)
Definition: mod_raw.cc:170
void * dynl_open(char *filename)
Definition: mod_raw.cc:142
#define loop
Definition: structs.h:80

◆ history_total_bytes()

int history_total_bytes ( )

◆ iiArithGetCmd()

char* iiArithGetCmd ( int  nPos)

Definition at line 9771 of file iparith.cc.

9772 {
9773  if(nPos<0) return NULL;
9774  if(nPos<(int)sArithBase.nCmdUsed)
9775  return sArithBase.sCmds[nPos].name;
9776  return NULL;
9777 }
cmdnames * sCmds
array of existing commands
Definition: iparith.cc:183
STATIC_VAR SArithBase sArithBase
Base entry for arithmetic.
Definition: iparith.cc:198
unsigned nCmdUsed
number of commands used
Definition: iparith.cc:188

◆ read_history()

int read_history ( char *  )

◆ readline()

char* readline ( const char *  )

◆ rl_completion_matches()

char** rl_completion_matches ( const char *  ,
RL_PROC   
)

◆ rl_filename_completion_function()

char* rl_filename_completion_function ( const char *  ,
int   
)

◆ singular_completion()

char** singular_completion ( char *  text,
int  start,
int  end 
)

Definition at line 175 of file feread.cc.

176 {
177  /* If this word is not in a string, then it may be a command
178  to complete. Otherwise it may be the name of a file in the current
179  directory. */
180 #ifdef HAVE_DYN_RL
181  #define x_rl_line_buffer (*fe_rl_line_buffer)
182  #define x_rl_completion_matches (*fe_completion_matches)
183  #define x_rl_filename_completion_function (*fe_filename_completion_function)
184 #else
185  #define x_rl_line_buffer rl_line_buffer
186  #define x_rl_completion_matches rl_completion_matches
187  #define x_rl_filename_completion_function rl_filename_completion_function
188 #endif
189  if ((start>0) && (x_rl_line_buffer[start-1]=='"'))
192 #undef x_rl_line_buffer
193 #undef x_rl_completion_matches
194  if (m==NULL)
195  {
196  m=(char **)malloc(2*sizeof(char*));
197  m[0]=(char *)malloc(end-start+2);
198  strncpy(m[0],text,end-start+1);
199  m[1]=NULL;
200  }
201  return m;
202 }
int m
Definition: cfEzgcd.cc:128
#define x_rl_filename_completion_function
#define x_rl_completion_matches
char *(* RL_PROC)(const char *, int)
Definition: feread.cc:104
#define x_rl_line_buffer
char * command_generator(char *text, int state)
Definition: feread.cc:50
void * malloc(size_t size)
Definition: omalloc.c:92

◆ using_history()

void using_history ( )

◆ write_history()

int write_history ( )

Variable Documentation

◆ fe_add_history

VAR void(* fe_add_history) (char *) ( char *  )

Definition at line 162 of file feread.cc.

◆ fe_completion_matches

char**(* fe_completion_matches) (...) (   ...)

Definition at line 165 of file feread.cc.

◆ fe_fgets_stdin

char*(* fe_fgets_stdin) (const char *pr, char *s, int size) ( const char *  pr,
char *  s,
int  size 
) = fe_fgets_stdin_init

Definition at line 30 of file feread.cc.

◆ fe_filename_completion_function

char*(* fe_filename_completion_function) () ( )

Definition at line 160 of file feread.cc.

◆ fe_history_total_bytes

VAR int(* fe_history_total_bytes) () ( )

Definition at line 169 of file feread.cc.

◆ fe_read_history

VAR int(* fe_read_history) (char *) ( char *  )

Definition at line 171 of file feread.cc.

◆ fe_readline

char*(* fe_readline) (char *) ( char *  )

Definition at line 161 of file feread.cc.

◆ fe_rl_attempted_completion_function

VAR CPPFunction** fe_rl_attempted_completion_function

Definition at line 166 of file feread.cc.

◆ fe_rl_line_buffer

VAR char** fe_rl_line_buffer

Definition at line 164 of file feread.cc.

◆ fe_rl_outstream

VAR FILE** fe_rl_outstream

Definition at line 167 of file feread.cc.

◆ fe_rl_readline_name

VAR char** fe_rl_readline_name

Definition at line 163 of file feread.cc.

◆ fe_using_history

VAR void(* fe_using_history) () ( )

Definition at line 170 of file feread.cc.

◆ fe_write_history

VAR int(* fe_write_history) () ( )

Definition at line 168 of file feread.cc.

◆ rl_attempted_completion_function

EXTERN_VAR CPPFunction* rl_attempted_completion_function

Definition at line 130 of file feread.cc.

◆ rl_line_buffer

EXTERN_VAR char* rl_line_buffer

Definition at line 125 of file feread.cc.

◆ rl_outstream

EXTERN_VAR FILE* rl_outstream

Definition at line 131 of file feread.cc.

◆ rl_readline_name

EXTERN_VAR char* rl_readline_name

Definition at line 124 of file feread.cc.