source/extensions/lines.c

   1
   2     /*+-----------------------------------------------------------------**
   3      **                       OpenScop Library                          **
   4      **-----------------------------------------------------------------**
   5      **                     extensions/lines.c                        **
   6      **-----------------------------------------------------------------**
   7      **                   First version: 07/12/2010                     **
   8      **-----------------------------------------------------------------**
   9
  10
  11  *****************************************************************************
  12  * OpenScop: Structures and formats for polyhedral tools to talk together    *
  13  *****************************************************************************
  14  *    ,___,,_,__,,__,,__,,__,,_,__,,_,__,,__,,___,_,__,,_,__,                *
  15  *    /   / /  //  //  //  // /   / /  //  //   / /  // /  /|,_,             *
  16  *   /   / /  //  //  //  // /   / /  //  //   / /  // /  / / /\             *
  17  *  |~~~|~|~~~|~~~|~~~|~~~|~|~~~|~|~~~|~~~|~~~|~|~~~|~|~~~|/_/  \            *
  18  *  | G |C| P | = | L | P |=| = |C| = | = | = |=| = |=| C |\  \ /\           *
  19  *  | R |l| o | = | e | l |=| = |a| = | = | = |=| = |=| L | \# \ /\          *
  20  *  | A |a| l | = | t | u |=| = |n| = | = | = |=| = |=| o | |\# \  \         *
  21  *  | P |n| l | = | s | t |=| = |d| = | = | = | |   |=| o | | \# \  \        *
  22  *  | H | | y |   | e | o | | = |l|   |   | = | |   | | G | |  \  \  \       *
  23  *  | I | |   |   | e |   | |   | |   |   |   | |   | |   | |   \  \  \      *
  24  *  | T | |   |   |   |   | |   | |   |   |   | |   | |   | |    \  \  \     *
  25  *  | E | |   |   |   |   | |   | |   |   |   | |   | |   | |     \  \  \    *
  26  *  | * |*| * | * | * | * |*| * |*| * | * | * |*| * |*| * | /      \* \  \   *
  27  *  | O |p| e | n | S | c |o| p |-| L | i | b |r| a |r| y |/        \  \ /   *
  28  *  '---'-'---'---'---'---'-'---'-'---'---'---'-'---'-'---'          '--'    *
  29  *                                                                           *
  30  * Copyright (C) 2008 University Paris-Sud 11 and INRIA                      *
  31  *                                                                           *
  32  * (3-clause BSD license)                                                    *
  33  * Redistribution and use in source  and binary forms, with or without       *
  34  * modification, are permitted provided that the following conditions        *
  35  * are met:                                                                  *
  36  *                                                                           *
  37  * 1. Redistributions of source code must retain the above copyright notice, *
  38  *    this list of conditions and the following disclaimer.                  *
  39  * 2. Redistributions in binary form must reproduce the above copyright      *
  40  *    notice, this list of conditions and the following disclaimer in the    *
  41  *    documentation and/or other materials provided with the distribution.   *
  42  * 3. The name of the author may not be used to endorse or promote products  *
  43  *    derived from this software without specific prior written permission.  *
  44  *                                                                           *
  45  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR      *
  46  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES *
  47  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.   *
  48  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,          *
  49  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT  *
  50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, *
  51  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY     *
  52  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT       *
  53  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF  *
  54  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.         *
  55  *                                                                           *
  56  * OpenScop Library, a library to manipulate OpenScop formats and data       *
  57  * structures. Written by:                                                   *
  58  * Cedric Bastoul     <Cedric.Bastoul@u-psud.fr> and                         *
  59  * Louis-Noel Pouchet <Louis-Noel.pouchet@inria.fr>                          *
  60  *                                                                           *
  61  *****************************************************************************/
  62
  63 # include <stdlib.h>
  64 # include <stdio.h>
  65 # include <string.h>
  66 # include <openscop/extension.h>
  67
  68
  69 /*+***************************************************************************
  70  *                          Structure display function                       *
  71  *****************************************************************************/
  72
  73
  74 /**
  75  * openscop_lines_idump function:
  76  * this function displays an openscop_lines_t structure (*lines) into a
  77  * file (file, possibly stdout) in a way that trends to be understandable. It
  78  * includes an indentation level (level) in order to work with others
  79  * print_structure functions.
  80  * \param file  The file where the information has to be printed.
  81  * \param lines The lines structure whose information has to be printed.
  82  * \param level Number of spaces before printing, for each line.
  83  */
  84 void openscop_lines_idump(FILE * file, openscop_lines_p lines,
  85                           int level) {
  86   int j;
  87
  88   // Go to the right level.
  89   for (j = 0; j < level; j++)
  90     fprintf(file, "|\t");
  91
  92   if (lines != NULL)
  93     fprintf(file, "+-- openscop_lines_t\n");
  94   else
  95     fprintf(file, "+-- NULL lines\n");
  96
  97   if (lines != NULL) {
  98     // Go to the right level.
  99     for(j = 0; j <= level; j++)
 100       fprintf(file, "|\t");
 101
 102     // Display the lines content.
 103     fprintf(file, "lines: %d - %d\n", lines->start,lines->end);
 104   }
 105
 106   // The last line.
 107   for (j = 0; j <= level; j++)
 108     fprintf(file, "|\t");
 109   fprintf(file, "\n");
 110 }
 111
 112
 113 /**
 114  * openscop_lines_dump function:
 115  * this function prints the content of an openscop_lines_t structure
 116  * (*lines) into a file (file, possibly stdout).
 117  * \param file    The file where the information has to be printed.
 118  * \param lines The lines structure whose information has to be printed.
 119  */
 120 void openscop_lines_dump(FILE * file, openscop_lines_p lines) {
 121   openscop_lines_idump(file, lines, 0);
 122 }
 123
 124
 125 /**
 126  * openscop_lines_sprint function:
 127  * this function prints the content of an openscop_lines_t structure
 128  * (*lines) into a string (returned) in the OpenScop textual format.
 129  * \param  lines The lines structure whose information has to be printed.
 130  * \return A string containing the OpenScop dump of the lines structure.
 131  */
 132 char * openscop_lines_sprint(openscop_lines_p lines) {
 133   int high_water_mark = OPENSCOP_MAX_STRING;
 134   char * string = NULL;
 135   char * buffer;
 136
 137   if (lines != NULL) {
 138     string = (char *)malloc(high_water_mark * sizeof(char));
 139     buffer = (char *)malloc(OPENSCOP_MAX_STRING * sizeof(char));
 140     if ((string == NULL) || (buffer == NULL)) {
 141       fprintf(stderr, "[OpenScop] Error: memory overflow.\n");
 142       exit(1);
 143     }
 144     string[0] = '\0';
 145
 146     // Print the begin tag.
 147     sprintf(buffer, OPENSCOP_TAG_LINES_START);
 148     openscop_util_safe_strcat(&string, buffer, &high_water_mark);
 149
 150     // Print the lines content.
 151     sprintf(buffer, "\n%d - %d\n", lines->start, lines->end);
 152     openscop_util_safe_strcat(&string, buffer, &high_water_mark);
 153
 154     // Print the end tag.
 155     sprintf(buffer, OPENSCOP_TAG_LINES_STOP"\n");
 156     openscop_util_safe_strcat(&string, buffer, &high_water_mark);
 157
 158     // Keep only the memory space we need.
 159     string = (char *)realloc(string, (strlen(string) + 1) * sizeof(char));
 160     free(buffer);
 161   }
 162
 163   return string;
 164 }
 165
 166
 167 /*****************************************************************************
 168  *                               Reading function                            *
 169  *****************************************************************************/
 170
 171 /**
 172  * openscop_lines_sread function:
 173  * this function reads a lines structure from a string complying to the
 174  * OpenScop textual format and returns a pointer to this lines structure.
 175  * The string should contain only one textual format of a lines structure.
 176  * \param  extensions The input string where to find a lines structure.
 177  * \return A pointer to the lines structure that has been read.
 178  */
 179 openscop_lines_p openscop_lines_sread(char * extensions) {
 180   char * content, *tmp;
 181   openscop_lines_p lines;
 182
 183   content = openscop_util_tag_content(extensions, OPENSCOP_TAG_LINES_START,
 184                                                   OPENSCOP_TAG_LINES_STOP);
 185   if (content == NULL) {
 186     fprintf(stderr, "[OpenScop] Info: no lines optional tag.\n");
 187     return NULL;
 188   }
 189
 190   if (strlen(content) > OPENSCOP_MAX_STRING) {
 191     fprintf(stderr, "[OpenScop] Error: lines too long.\n");
 192     exit(1);
 193   }
 194   lines = openscop_lines_malloc();
 195   tmp = strtok(content," -");
 196   lines->start = atoi(tmp);
 197   if(lines->start == -1) {
 198     fprintf(stderr, "[OpenScop] Error: lines start NaN.\n");
 199     exit(1);
 200   }
 201   tmp = strtok(NULL," -");
 202   lines->end = atoi(tmp);
 203   if(lines->end == -1) {
 204     fprintf(stderr, "[OpenScop] Error: lines end NaN.\n");
 205     exit(1);
 206   }
 207   return lines;
 208 }
 209
 210
 211 /*+***************************************************************************
 212  *                    Memory allocation/deallocation function                *
 213  *****************************************************************************/
 214
 215
 216 /**
 217  * openscop_lines_malloc function:
 218  * This function allocates the memory space for an openscop_lines_t
 219  * structure and sets its fields with default values. Then it returns a
 220  * pointer to the allocated space.
 221  * \return A pointer to an empty lines structure with fields set to
 222  *         default values.
 223  */
 224 openscop_lines_p openscop_lines_malloc() {
 225   openscop_lines_p lines = (openscop_lines_p)malloc(sizeof(openscop_lines_t));
 226
 227   if (lines == NULL) {
 228     fprintf(stderr, "[OpenScop] Error: memory overflow.\n");
 229     exit(1);
 230   }
 231
 232   lines->start = OPENSCOP_UNDEFINED;
 233   lines->end   = OPENSCOP_UNDEFINED;
 234
 235   return lines;
 236 }
 237
 238
 239 /**
 240  * openscop_lines_free function:
 241  * This function frees the allocated memory for an openscop_lines_t
 242  * structure.
 243  * \param lines The pointer to the lines structure we want to free.
 244  */
 245 void openscop_lines_free(openscop_lines_p lines) {
 246   if (lines != NULL) {
 247     free(lines);
 248   }
 249 }
 250
 251
 252 /*+***************************************************************************
 253  *                            Processing functions                           *
 254  *****************************************************************************/
 255
 256
 257 /**
 258  * openscop_lines_copy function:
 259  * This function builds and returns a "hard copy" (not a pointer copy) of an
 260  * openscop_lines_t data structure.
 261  * \param lines The pointer to the lines structure we want to copy.
 262  * \return A pointer to the copy of the lines structure.
 263  */
 264 openscop_lines_p openscop_lines_copy(openscop_lines_p lines) {
 265   openscop_lines_p copy;
 266
 267   if (lines == NULL)
 268     return NULL;
 269
 270   copy = openscop_lines_malloc();
 271   if (copy == NULL) {
 272     fprintf(stderr, "[OpenScop] Error: memory overflow.\n");
 273     exit(1);
 274   }
 275   copy->start = lines->start;
 276   copy->end = lines->end;
 277
 278   return copy;
 279 }
 280
 281
 282 /**
 283  * openscop_lines_equal function:
 284  * this function returns true if the two lines structures are the same
 285  * (content-wise), false otherwise. This functions considers two lines
 286  * \param c1  The first lines structure.
 287  * \param c2  The second lines structure.
 288  * \return 1 if c1 and c2 are the same (content-wise), 0 otherwise.
 289  */
 290 int openscop_lines_equal(openscop_lines_p c1, openscop_lines_p c2) {
 291   if (c1 == c2)
 292     return 1;
 293
 294   if (((c1 == NULL) && (c2 != NULL)) || ((c1 != NULL) && (c2 == NULL)))
 295     return 0;
 296
 297   if ((c1->start != c2->start) || (c1->end != c2->end))
 298     return 0;
 299
 300   return 1;
 301 }