[splint.git] / src / source.c

/*
** LCLint - annotation-assisted static program checker
** Copyright (C) 1994-2000 University of Virginia,
**         Massachusetts Institute of Technology
**
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
** General Public License for more details.
** 
** The GNU General Public License is available from http://www.gnu.org/ or
** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
** MA 02111-1307, USA.
**
** For information on lclint: lclint-request@cs.virginia.edu
** To report a bug: lclint-bug@cs.virginia.edu
** For more information: http://lclint.cs.virginia.edu
*/
/*
** source.c
**
** Interface to source file abstraction
**
**	NOTE:	    This module is almost identical to the one for LCL.  The
**		    only difference is that a couple of source lines have been
**		    commented out.
**
**		    This module has too many dependencies to be in the common
**		    source area.  Any of the solutions that would allow this
**		    module to be common had its own set of compromises.  It
**		    seemed best and most straightforward to just keep separte
**		    copies for LSL and LCL.  We should examine this again if we
**		    ever reorganize the module structure.
**
**  AUTHORS:
**
**     Steve Garland,
**         Massachusetts Institute of Technology
**     Joe Wild, Technical Languages and Environments, DECspec project
*/

# include "lclintMacros.nf"
# include "llbasic.h"
# include "osd.h"
# include "portab.h"

extern bool
tsource_close (tsource *s)
{
  if (s->file != NULL)
    {
      check (fclose (s->file) == 0);
      s->file = NULL;
      return TRUE;
    }

  return FALSE;
}

extern void
tsource_free (/*@null@*/ /*@only@*/ tsource *s)
{
  if (s != NULL)
    {
      sfree (s->name);
      sfree (s->stringSource);
      sfree (s);
    }
}

extern /*@only@*/ tsource *
  tsource_create (char *name, char *suffix, bool echo)
{
  char *ps;
  tsource *s = (tsource *) dmalloc (sizeof (*s));
  
  s->name = (char *) dmalloc (strlen (name) + strlen (suffix) + 1);
  s->file = 0;
  strcpy (s->name, name);

  ps = strrchr (s->name, CONNECTCHAR);

  if (ps == (char *) 0)
    {
      ps = s->name;
    }

  if (strchr (ps, '.') == NULL)
    {
      strcat (s->name, suffix);
    }

  

  s->lineNo = 0;
  s->echo = echo;
  s->fromString = FALSE;
  s->stringSource = NULL;
  s->stringSourceTail = NULL;
  

  return s;
}

extern /*@only@*/ tsource *
tsource_fromString (char *name, char *str)
{
  tsource *s = (tsource *) dmalloc (sizeof (*s));

  s->name = mstring_copy (name);
  s->stringSource = mstring_copy (str);
  s->stringSourceTail = s->stringSource;
  s->file = 0;
  s->echo = FALSE;
  s->fromString = TRUE;
  s->lineNo = 0;

    return s;
}

extern /*@dependent@*/ /*@null@*/ 
char *tsource_nextLine (tsource *s)
{
  char *currentLine;
  int len;

  if (s->fromString)
    {
      if (s->stringSourceTail == NULL || (strlen (s->stringSourceTail) == 0))
	{
	  currentLine = 0;
	}
      else
	{
	  char *c = strchr (s->stringSourceTail, '\n');
	  
	  
	  /* in case line is terminated not by newline */ 
	  if (c == 0)
	    {
	      c = strchr (s->stringSourceTail, '\0');
	    }

	  len = c - s->stringSourceTail + 1;

	  if (len > STUBMAXRECORDSIZE - 2)
	    {
	      len = (STUBMAXRECORDSIZE - 2);
	    }

	  currentLine = &(s->buffer)[0];
	  strncpy (currentLine, s->stringSourceTail, size_fromInt (len));
	  currentLine[len] = '\0';
	  s->stringSourceTail += len;
	}
      
    }
  else
    {
      llassert (s->file != NULL);
      currentLine = fgets (&(s->buffer)[0], STUBMAXRECORDSIZE, s->file);
    }
  if (currentLine == 0)
    {
      strcpy (s->buffer, "*** End of File ***");
    }
  else
    {
      s->lineNo++;
      len = strlen (currentLine) - 1;
      if (s->buffer[len] == '\n')
	{
	  s->buffer[len] = '\0';
	}
      else 
	{
	  if (len >= STUBMAXRECORDSIZE - 2)
	    {
	      lldiagmsg (message ("Input line too long: %s",
				  cstring_fromChars (currentLine)));
	    }
	}
    }
  /* if (s->echo) slo_echoLine (currentLine);		only needed in LCL */
    return currentLine;
}

extern bool
tsource_open (tsource *s)
{
  if (s->fromString)
    {
      /* not an error: tail is dependent */
      s->stringSourceTail = s->stringSource; 
      return TRUE;
    }

  DPRINTF (("Open: %s", s->name));
  s->file = fopen (s->name, "r");
  return (s->file != 0 || s->fromString);
}

/*
** requires
**  path != NULL \and
**  s != NULL \and
**  *s.name == filename (*s.name) || filetype (*s.name)
**      *s.name consists of a file name and type only ("<filename>.<type>)
**	No path name is included
**
** ensures
**  if filefound (*path, *s) then
**	result = true \and *s.name = filespec_where_file_found (*path, *s)
**  else
**	result = false
*/

extern bool tsource_getPath (char *path, tsource *s)
{
  char *returnPath;
  filestatus status;		/* return status of osd_getEnvPath.*/
  bool rVal;			/* return value of this procedure. */

 /* Check if requires met. */
  if (path == NULL || s == NULL || s->name == NULL)
    {
      llbugexitlit ("tsource_getPath: invalid parameter");
    }

  status = osd_getPath (path, s->name, &returnPath);

  if (status == OSD_FILEFOUND)
    {				/* Should be majority of cases. */
      rVal = TRUE;
      
      sfree (s->name);
      s->name = returnPath;
    }
  else if (status == OSD_FILENOTFOUND)
    {
      rVal = FALSE;
    }
  else if (status == OSD_PATHTOOLONG)
    {
      rVal = FALSE;
     /* Directory and filename are too long.  Report error. */
     llbuglit ("soure_getPath: Filename plus directory from search path too long");
 }
  else
    {
      rVal = FALSE;
      llbuglit ("tsource_getPath: invalid return status");
    }
  return rVal;
}

# ifndef NOLCL
char *specFullName (char *specfile, /*@out@*/ char **inpath)
{
  /* extract the path and the specname associated with the given file */
  char *specname = (char *) dmalloc (sizeof (*specname) 
				     * (strlen (specfile) + 9));
  char *ospecname = specname;
  char *path = (char *) dmalloc (sizeof (*path) * (strlen (specfile)));
  size_t size;
  long int i, j;
  
  /* initialized path to empty string or may have accidental garbage */
  *path = '\0';

  /*@-mayaliasunique@*/ 
  strcpy (specname, specfile);
  /*@=mayaliasunique@*/ 

  /* trim off pathnames in specfile */
  size = strlen (specname);

  for (i = size_toInt (size) - 1; i >= 0; i--)
    {
      if (specname[i] == CONNECTCHAR)
	{
	  /* strcpy (specname, (char *)specname+i+1); */
	  for (j = 0; j <= i; j++)	/* include '/'  */
	    {
	      path[j] = specname[j];
	    }

	  path[i + 1] = '\0';
	  specname += i + 1;
	  break;
	}
    }

  /* 
  ** also remove .lcl file extension, assume it's the last extension
  ** of the file name 
  */

  size = strlen (specname);

  for (i = size_toInt (size) - 1; i >= 0; i--)
    {
      if (specname[i] == '.')
	{
	  specname[i] = '\0';
	  break;
	}
    }
  
  *inpath = path;

  /*
  ** If specname no longer points to the original char,
  ** we need to allocate a new pointer and copy the string.
  */

  if (specname != ospecname) {
    char *rspecname = (char *) dmalloc (sizeof (*rspecname) * (strlen (specname) + 1));
    strcpy (rspecname, specname); /* evs 2000-05-16: Bug: was ospecname! */
    sfree (ospecname);
    return rspecname;
  } 

  return specname;
}
# endif
Commit	Line	Data
885824d3	1	/*
	2	** LCLint - annotation-assisted static program checker
	3	** Copyright (C) 1994-2000 University of Virginia,
	4	** Massachusetts Institute of Technology
	5	**
	6	** This program is free software; you can redistribute it and/or modify it
	7	** under the terms of the GNU General Public License as published by the
	8	** Free Software Foundation; either version 2 of the License, or (at your
	9	** option) any later version.
	10	**
	11	** This program is distributed in the hope that it will be useful, but
	12	** WITHOUT ANY WARRANTY; without even the implied warranty of
	13	** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	** General Public License for more details.
	15	**
	16	** The GNU General Public License is available from http://www.gnu.org/ or
	17	** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
	18	** MA 02111-1307, USA.
	19	**
	20	** For information on lclint: lclint-request@cs.virginia.edu
	21	** To report a bug: lclint-bug@cs.virginia.edu
	22	** For more information: http://lclint.cs.virginia.edu
	23	*/
	24	/*
	25	** source.c
	26	**
	27	** Interface to source file abstraction
	28	**
	29	** NOTE: This module is almost identical to the one for LCL. The
	30	** only difference is that a couple of source lines have been
	31	** commented out.
	32	**
	33	** This module has too many dependencies to be in the common
	34	** source area. Any of the solutions that would allow this
	35	** module to be common had its own set of compromises. It
	36	** seemed best and most straightforward to just keep separte
	37	** copies for LSL and LCL. We should examine this again if we
	38	** ever reorganize the module structure.
	39	**
	40	** AUTHORS:
	41	**
	42	** Steve Garland,
	43	** Massachusetts Institute of Technology
	44	** Joe Wild, Technical Languages and Environments, DECspec project
	45	*/
	46
	47	# include "lclintMacros.nf"
	48	# include "llbasic.h"
	49	# include "osd.h"
	50	# include "portab.h"
	51
	52	extern bool
	53	tsource_close (tsource *s)
	54	{
	55	if (s->file != NULL)
	56	{
	57	check (fclose (s->file) == 0);
	58	s->file = NULL;
	59	return TRUE;
	60	}
	61
	62	return FALSE;
	63	}
	64
65	extern void
66	tsource_free (/@null@/ /@only@/ tsource *s)
67	{
68	if (s != NULL)
69	{
70	sfree (s->name);
71	sfree (s->stringSource);
72	sfree (s);
73	}
74	}
75
76	extern /@only@/ tsource *
77	tsource_create (char name, char suffix, bool echo)
78	{
79	char *ps;
80	tsource s = (tsource ) dmalloc (sizeof (*s));
81
82	s->name = (char *) dmalloc (strlen (name) + strlen (suffix) + 1);
83	s->file = 0;
84	strcpy (s->name, name);
85
86	ps = strrchr (s->name, CONNECTCHAR);
87
88	if (ps == (char *) 0)
89	{
90	ps = s->name;
91	}
92
93	if (strchr (ps, '.') == NULL)
94	{
95	strcat (s->name, suffix);
96	}
97
98
99
100	s->lineNo = 0;
101	s->echo = echo;
102	s->fromString = FALSE;
103	s->stringSource = NULL;
104	s->stringSourceTail = NULL;
105
106
107	return s;
108	}
109
110	extern /@only@/ tsource *
111	tsource_fromString (char name, char str)
112	{
113	tsource s = (tsource ) dmalloc (sizeof (*s));
114
115	s->name = mstring_copy (name);
116	s->stringSource = mstring_copy (str);
117	s->stringSourceTail = s->stringSource;
118	s->file = 0;
119	s->echo = FALSE;
120	s->fromString = TRUE;
121	s->lineNo = 0;
122
123	return s;
124	}
125
126	extern /@dependent@/ /@null@/
127	char tsource_nextLine (tsource s)
128	{
129	char *currentLine;
130	int len;
131
132	if (s->fromString)
133	{
134	if (s->stringSourceTail == NULL \|\| (strlen (s->stringSourceTail) == 0))
135	{
136	currentLine = 0;
137	}
138	else
139	{
140	char *c = strchr (s->stringSourceTail, '\n');
141
142
143	/* in case line is terminated not by newline */
144	if (c == 0)
145	{
146	c = strchr (s->stringSourceTail, '\0');
147	}
148
149	len = c - s->stringSourceTail + 1;
150
151	if (len > STUBMAXRECORDSIZE - 2)
152	{
153	len = (STUBMAXRECORDSIZE - 2);
154	}
155
156	currentLine = &(s->buffer)[0];
157	strncpy (currentLine, s->stringSourceTail, size_fromInt (len));
158	currentLine[len] = '\0';
159	s->stringSourceTail += len;
160	}
161
162	}
163	else
164	{
165	llassert (s->file != NULL);
166	currentLine = fgets (&(s->buffer)[0], STUBMAXRECORDSIZE, s->file);
167	}
168	if (currentLine == 0)
169	{
170	strcpy (s->buffer, "* End of File *");
171	}
172	else
173	{
174	s->lineNo++;
175	len = strlen (currentLine) - 1;
176	if (s->buffer[len] == '\n')
177	{
178	s->buffer[len] = '\0';
179	}
180	else
181	{
182	if (len >= STUBMAXRECORDSIZE - 2)
183	{
184	lldiagmsg (message ("Input line too long: %s",
185	cstring_fromChars (currentLine)));
186	}
187	}
188	}
189	/* if (s->echo) slo_echoLine (currentLine); only needed in LCL */
190	return currentLine;
191	}
192
193	extern bool
194	tsource_open (tsource *s)
195	{
196	if (s->fromString)
197	{
198	/* not an error: tail is dependent */
199	s->stringSourceTail = s->stringSource;
200	return TRUE;
201	}
202
203	DPRINTF (("Open: %s", s->name));
204	s->file = fopen (s->name, "r");
205	return (s->file != 0 \|\| s->fromString);
206	}
207
208	/*
209	** requires
210	** path != NULL \and
211	** s != NULL \and
212	** s.name == filename (s.name) \|\| filetype (*s.name)
213	** *s.name consists of a file name and type only ("<filename>.<type>)
214	** No path name is included
215	**
216	** ensures
217	** if filefound (path, s) then
218	** result = true \and s.name = filespec_where_file_found (path, *s)
219	** else
220	** result = false
221	*/
222
223	extern bool tsource_getPath (char path, tsource s)
224	{
225	char *returnPath;
226	filestatus status; /* return status of osd_getEnvPath.*/
227	bool rVal; /* return value of this procedure. */
228
229	/* Check if requires met. */
230	if (path == NULL \|\| s == NULL \|\| s->name == NULL)
231	{
232	llbugexitlit ("tsource_getPath: invalid parameter");
233	}
234
235	status = osd_getPath (path, s->name, &returnPath);
236
237	if (status == OSD_FILEFOUND)
238	{ /* Should be majority of cases. */
239	rVal = TRUE;
240
241	sfree (s->name);
242	s->name = returnPath;
243	}
244	else if (status == OSD_FILENOTFOUND)
245	{
246	rVal = FALSE;
247	}
248	else if (status == OSD_PATHTOOLONG)
249	{
250	rVal = FALSE;
251	/* Directory and filename are too long. Report error. */
252	llbuglit ("soure_getPath: Filename plus directory from search path too long");
253	}
254	else
255	{
256	rVal = FALSE;
257	llbuglit ("tsource_getPath: invalid return status");
258	}
259	return rVal;
260	}
261
262	# ifndef NOLCL
263	char specFullName (char specfile, /@out@/ char **inpath)
264	{
265	/* extract the path and the specname associated with the given file */
266	char specname = (char ) dmalloc (sizeof (*specname)
267	* (strlen (specfile) + 9));
268	char *ospecname = specname;
269	char path = (char ) dmalloc (sizeof (path) (strlen (specfile)));
270	size_t size;
271	long int i, j;
272
273	/* initialized path to empty string or may have accidental garbage */
274	*path = '\0';
275
276	/@-mayaliasunique@/
277	strcpy (specname, specfile);
278	/@=mayaliasunique@/
279
280	/* trim off pathnames in specfile */
281	size = strlen (specname);
282
283	for (i = size_toInt (size) - 1; i >= 0; i--)
284	{
285	if (specname[i] == CONNECTCHAR)
286	{
287	/* strcpy (specname, (char )specname+i+1); /
288	for (j = 0; j <= i; j++) /* include '/' */
289	{
290	path[j] = specname[j];
291	}
292
293	path[i + 1] = '\0';
294	specname += i + 1;
295	break;
296	}
297	}
298
299	/*
300	** also remove .lcl file extension, assume it's the last extension
301	** of the file name
302	*/
303
304	size = strlen (specname);
305
306	for (i = size_toInt (size) - 1; i >= 0; i--)
307	{
308	if (specname[i] == '.')
309	{
310	specname[i] = '\0';
311	break;
312	}
313	}
314
315	*inpath = path;
316
317	/*
318	** If specname no longer points to the original char,
319	** we need to allocate a new pointer and copy the string.
320	*/
321
322	if (specname != ospecname) {
323	char rspecname = (char ) dmalloc (sizeof (rspecname) (strlen (specname) + 1));
324	strcpy (rspecname, specname); /* evs 2000-05-16: Bug: was ospecname! */
325	sfree (ospecname);
326	return rspecname;
327	}
328
329	return specname;
330	}
331	# endif
332