X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dff9e15c44ab6340d27215957c56fa72fad246a2..784dd701843ed092f51ac04a2958e81ab0a24bb9:/src/xbt/xbt_strbuff.c

diff --git a/src/xbt/xbt_strbuff.c b/src/xbt/xbt_strbuff.c
index f734c480cc..e87d383c70 100644
--- a/src/xbt/xbt_strbuff.c
+++ b/src/xbt/xbt_strbuff.c
@@ -1,415 +1,89 @@
-/* $Id: buff.c 3483 2007-05-07 11:18:56Z mquinson $ */
-
 /* strbuff -- string buffers                                                */
 
-/* Copyright (c) 2007 Martin Quinson.                                       */
-/* All rights reserved.                                                     */
+/* Copyright (c) 2007-2015. The SimGrid Team.
+ * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
-/* specific to Borland Compiler */
-#ifdef __BORLANDDC__
-#pragma hdrstop
-#endif
-
 #include "xbt/strbuff.h"
+#include <stdarg.h>
 
 #define minimal_increment 512
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(strbuff, xbt, "String buffers");
 
-/**
-** Buffer code
-**/
-
-void xbt_strbuff_empty(xbt_strbuff_t b)
+/** @brief Remove any content from the buffer */
+inline void xbt_strbuff_clear(xbt_strbuff_t b)
 {
   b->used = 0;
-  b->data[0] = '\n';
-  b->data[1] = '\0';
+  b->data[0] = '\0';
 }
 
+/** @brief Constructor */
 xbt_strbuff_t xbt_strbuff_new(void)
 {
-  xbt_strbuff_t res = malloc(sizeof(s_xbt_strbuff_t));
-  res->data = malloc(512);
+  xbt_strbuff_t res = xbt_malloc(sizeof(s_xbt_strbuff_t));
+  res->data = xbt_malloc(512);
   res->size = 512;
-  xbt_strbuff_empty(res);
+  xbt_strbuff_clear(res);
   return res;
 }
 
 /** @brief creates a new string buffer containing the provided string
  *
- * Beware, we store the ctn directly, not a copy of it
+ * Beware, the ctn is copied, you want to free it afterward, anyhow
  */
-xbt_strbuff_t xbt_strbuff_new_from(char *ctn)
+inline xbt_strbuff_t xbt_strbuff_new_from(const char *ctn)
 {
-  xbt_strbuff_t res = malloc(sizeof(s_xbt_strbuff_t));
-  res->data = ctn;
-  res->used = res->size = strlen(ctn);
+  xbt_strbuff_t res = xbt_malloc(sizeof(s_xbt_strbuff_t));
+  res->data = xbt_strdup(ctn);
+  res->size = strlen(ctn);
+  res->used = res->size;
   return res;
 }
 
 /** @brief frees only the container without touching to the contained string */
-void xbt_strbuff_free_container(xbt_strbuff_t b)
+inline void xbt_strbuff_free_container(xbt_strbuff_t b)
 {
   free(b);
 }
 
 /** @brief frees the buffer and its content */
-void xbt_strbuff_free(xbt_strbuff_t b)
+inline void xbt_strbuff_free(xbt_strbuff_t b)
 {
   if (b) {
-    if (b->data)
-      free(b->data);
+    free(b->data);
     free(b);
   }
 }
 
+/** @brief Adds some content at the end of the buffer */
 void xbt_strbuff_append(xbt_strbuff_t b, const char *toadd)
 {
   int addlen;
   int needed_space;
 
-  if (!b)
-    THROW0(arg_error, 0, "Asked to append stuff to NULL buffer");
+  xbt_assert(b, "Asked to append stuff to NULL buffer");
 
   addlen = strlen(toadd);
   needed_space = b->used + addlen + 1;
 
   if (needed_space > b->size) {
-    b->data =
-      realloc(b->data, MAX(minimal_increment + b->used, needed_space));
     b->size = MAX(minimal_increment + b->used, needed_space);
+    b->data = xbt_realloc(b->data, b->size);
   }
-  strcpy(b->data + b->used, toadd);
+  strncpy(b->data + b->used, toadd, b->size-b->used);
   b->used += addlen;
 }
 
-void xbt_strbuff_chomp(xbt_strbuff_t b)
-{
-  while (b->data[b->used] == '\n') {
-    b->data[b->used] = '\0';
-    if (b->used)
-      b->used--;
-  }
-}
-
-void xbt_strbuff_trim(xbt_strbuff_t b)
-{
-  xbt_str_trim(b->data, " ");
-  b->used = strlen(b->data);
-}
-
-/** @brief Replaces a set of variables by their values
- *
- * @param b buffer to modify
- * @param patterns variables to substitute in the buffer
- *
- * Both '$toto' and '${toto}' are valid (and the two writing are equivalent).
- *
- * If the variable name contains spaces, use the brace version (ie, ${toto tutu})
- *
- * You can provide a default value to use if the variable is not set in the dict by using
- * '${var:=default}' or '${var:-default}'. These two forms are equivalent, even if they
- * shouldn't to respect the shell standard (:= form should set the value in the dict,
- * but does not) (BUG).
- */
-void xbt_strbuff_varsubst(xbt_strbuff_t b, xbt_dict_t patterns)
-{
-
-  char *end;                    /* pointers around the parsed chunk */
-  int in_simple_quote = 0, in_double_quote = 0;
-  int done = 0;
-
-  if (b->data[0] == '\0')
-    return;
-  end = b->data;
-
-  while (!done) {
-
-    switch (*end) {
-    case '\\':
-      /* Protected char; pass the protection */
-      end++;
-      if (*end == '\0')
-        THROW0(arg_error, 0, "String ends with \\");
-      break;
-
-    case '\'':
-      if (!in_double_quote) {
-        /* simple quote not protected by double ones, note it */
-        in_simple_quote = !in_simple_quote;
-      }
-      break;
-    case '"':
-      if (!in_simple_quote) {
-        /* double quote protected by simple ones, note it */
-        in_double_quote = !in_double_quote;
-      }
-      break;
-
-    case '$':
-      if (!in_simple_quote) {
-        /* Go for the substitution. First search the variable name */
-        char *beg_var, *end_var;        /* variable name boundary */
-        char *beg_subst, *end_subst = NULL;     /* where value should be written to */
-        char *value, *default_value = NULL;
-        int val_len;
-        beg_subst = end;
-
-
-        if (*(++end) == '{') {
-          /* the variable name is enclosed in braces. */
-          beg_var = end + 1;
-          /* Search name's end */
-          end_var = beg_var;
-          while (*end_var != '\0' && *end_var != '}') {
-            /* TODO: we do not respect the standard for ":=", we should set this value in the dict */
-            if (*end_var == ':'
-                && ((*(end_var + 1) == '=') || (*(end_var + 1) == '-'))) {
-              /* damn, we have a default value */
-              char *p = end_var + 1;
-              while (*p != '\0' && *p != '}')
-                p++;
-              if (*p == '\0')
-                THROW0(arg_error, 0,
-                       "Variable default value not terminated ('}' missing)");
-
-              default_value = xbt_malloc(p - end_var - 1);
-              memcpy(default_value, end_var + 2, p - end_var - 2);
-              default_value[p - end_var - 2] = '\0';
-
-              end_subst = p + 1;        /* eat '}' */
-
-              break;
-            }
-            end_var++;
-          }
-          if (*end_var == '\0')
-            THROW0(arg_error, 0,
-                   "Variable name not terminated ('}' missing)");
-
-          if (!end_subst)       /* already set if there's a default value */
-            end_subst = end_var + 1;    /* also kill the } in the name */
-
-          if (end_var == beg_var)
-            THROW0(arg_error, 0, "Variable name empty (${} is not valid)");
-
-
-        } else {
-          /* name given directly */
-          beg_var = end;
-          end_var = beg_var;
-          while (*end_var != '\0' && *end_var != ' ' && *end_var != '\t'
-                 && *end_var != '\n')
-            end_var++;
-          end_subst = end_var;
-          if (end_var == beg_var)
-            THROW0(arg_error, 0, "Variable name empty ($ is not valid)");
-        }
-//          DEBUG1("End_var = %s",end_var);
-
-        /* ok, we now have the variable name. Search the dictionary for the substituted value */
-        value =
-          xbt_dict_get_or_null_ext(patterns, beg_var, end_var - beg_var);
-//          DEBUG4("Search for %.*s, found %s (default value = %s)\n",
-//                  end_var-beg_var,beg_var,
-//                  (value?value:"NULL"),
-//                  (default_value?default_value:"NULL"));
-
-        if (value)
-          value = xbt_strdup(value);
-        else
-          value = xbt_strdup(default_value);
-
-        if (!value)
-          value = xbt_strdup("");
-
-        /* En route for the actual substitution */
-        val_len = strlen(value);
-//          DEBUG2("val_len = %d, key_len=%d",val_len,end_subst-beg_subst);
-        if (val_len <= end_subst - beg_subst) {
-          /* enough room to do the substitute in place */
-//            INFO3("Substitute '%s' with '%s' for %d chars",beg_subst,value, val_len);
-          memmove(beg_subst, value, val_len);   /* substitute */
-//            INFO3("Substitute '%s' with '%s' for %d chars",beg_subst+val_len,end_subst, b->used-(end_subst-b->data)+1);
-          memmove(beg_subst + val_len, end_subst, b->used - (end_subst - b->data) + 1); /* move the end of the string closer */
-          end = beg_subst + val_len;    /* update the currently explored char in the overall loop */
-          b->used -= end_subst - beg_subst - val_len;   /* update string buffer used size */
-        } else {
-          /* we have to extend the data area */
-          int tooshort =
-            val_len - (end_subst - beg_subst) + 1 /*don't forget \0 */ ;
-          int newused = b->used + tooshort;
-          end += tooshort;      /* update the pointer of the overall loop */
-//            DEBUG2("Too short (by %d chars; %d chars left in area)",val_len- (end_subst-beg_subst), b->size - b->used);
-          if (newused > b->size) {
-            /* We have to realloc the data area before (because b->size is too small). We have to update our pointers, too */
-            char *newdata =
-              realloc(b->data, b->used + MAX(minimal_increment, tooshort));
-            int offset = newdata - b->data;
-            b->data = newdata;
-            b->size = b->used + MAX(minimal_increment, tooshort);
-            end += offset;
-            beg_subst += offset;
-            end_subst += offset;
-          }
-          memmove(beg_subst + val_len, end_subst, b->used - (end_subst - b->data) + 2); /* move the end of the string a bit further */
-          memmove(beg_subst, value, val_len);   /* substitute */
-          b->used = newused;
-        }
-        free(value);
-
-        if (default_value)
-          free(default_value);
-      }
-      break;
-
-    case '\0':
-      done = 1;
-    }
-    end++;
-  }
-}
-
-#ifdef SIMGRID_TEST
-#include "xbt/strbuff.h"
-
-/* buffstr have 512 chars by default. Adding 1000 chars like this will force a resize, allowing us to test that b->used and b->size are consistent */
-#define force_resize \
-  "1.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "2.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "3.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "4.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "5.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "6.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "7.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "8.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "9.........1.........2.........3.........4.........5.........6.........7.........8.........9........." \
-  "0.........1.........2.........3.........4.........5.........6.........7.........8.........9........."
-
-static void mytest(const char *input, const char *patterns,
-                   const char *expected)
+/** @brief format some content and push it at the end of the buffer */
+void xbt_strbuff_printf(xbt_strbuff_t b, const char *fmt, ...)
 {
-  xbt_dynar_t dyn_patterns;     /* splited string */
-  xbt_dict_t p;                 /* patterns */
-  unsigned int cpt;
-  char *str;                    /*foreach */
-  xbt_strbuff_t sb;             /* what we test */
-
-  p = xbt_dict_new();
-  dyn_patterns = xbt_str_split(patterns, " ");
-  xbt_dynar_foreach(dyn_patterns, cpt, str) {
-    xbt_dynar_t keyvals = xbt_str_split(str, "=");
-    char *key = xbt_dynar_get_as(keyvals, 0, char *);
-    char *val = xbt_dynar_get_as(keyvals, 1, char *);
-    xbt_str_subst(key, '_', ' ', 0);    // to put space in names without breaking the enclosing dynar_foreach
-    xbt_dict_set(p, key, xbt_strdup(val), free);
-    xbt_dynar_free(&keyvals);
-  }
-  xbt_dynar_free(&dyn_patterns);
-  sb = xbt_strbuff_new();
-  xbt_strbuff_append(sb, input);
-  xbt_strbuff_varsubst(sb, p);
-  xbt_dict_free(&p);
-  xbt_test_assert4(!strcmp(sb->data, expected),
-                   "Input (%s) with patterns (%s) leads to (%s) instead of (%s)",
-                   input, patterns, sb->data, expected);
-  xbt_strbuff_free(sb);
-}
-
-XBT_TEST_SUITE("xbt_strbuff", "String Buffers");
-XBT_TEST_UNIT("xbt_strbuff_substitute", test_strbuff_substitute,
-              "test the function xbt_strbuff_substitute")
-{
-  xbt_test_add0("Empty");
-  mytest("", "", "");
-
-  xbt_test_add0("Value shorter, no braces, only variable");
-  mytest("$tutu", "tutu=t", "t");
-  xbt_test_add0("Value shorter, braces, only variable");
-  mytest("${tutu}", "tutu=t", "t");
-  xbt_test_add0("Value shorter, no braces, data after");
-  mytest("$tutu toto", "tutu=t", "t toto");
-  xbt_test_add0("Value shorter, braces, data after");
-  mytest("${tutu} toto", "tutu=t", "t toto");
-  xbt_test_add0("Value shorter, no braces, data before");
-  mytest("toto $tutu", "tutu=t", "toto t");
-  xbt_test_add0("Value shorter, braces, data before");
-  mytest("toto ${tutu}", "tutu=t", "toto t");
-  xbt_test_add0("Value shorter, no braces, data before and after");
-  mytest("toto $tutu tata", "tutu=t", "toto t tata");
-  xbt_test_add0("Value shorter, braces, data before and after");
-  mytest("toto ${tutu} tata", "tutu=t", "toto t tata");
-
-  xbt_test_add0("Value as long, no braces, only variable");
-  mytest("$tutu", "tutu=12345", "12345");
-  xbt_test_add0("Value as long, braces, only variable");
-  mytest("${tutu}", "tutu=1234567", "1234567");
-  xbt_test_add0("Value as long, no braces, data after");
-  mytest("$tutu toto", "tutu=12345", "12345 toto");
-  xbt_test_add0("Value as long, braces, data after");
-  mytest("${tutu} toto", "tutu=1234567", "1234567 toto");
-  xbt_test_add0("Value as long, no braces, data before");
-  mytest("toto $tutu", "tutu=12345", "toto 12345");
-  xbt_test_add0("Value as long, braces, data before");
-  mytest("toto ${tutu}", "tutu=1234567", "toto 1234567");
-  xbt_test_add0("Value as long, no braces, data before and after");
-  mytest("toto $tutu tata", "tutu=12345", "toto 12345 tata");
-  xbt_test_add0("Value as long, braces, data before and after");
-  mytest("toto ${tutu} tata", "tutu=1234567", "toto 1234567 tata");
-
-  xbt_test_add0("Value longer, no braces, only variable");
-  mytest("$t", "t=tututu", "tututu");
-  xbt_test_add0("Value longer, braces, only variable");
-  mytest("${t}", "t=tututu", "tututu");
-  xbt_test_add0("Value longer, no braces, data after");
-  mytest("$t toto", "t=tututu", "tututu toto");
-  xbt_test_add0("Value longer, braces, data after");
-  mytest("${t} toto", "t=tututu", "tututu toto");
-  xbt_test_add0("Value longer, no braces, data before");
-  mytest("toto $t", "t=tututu", "toto tututu");
-  xbt_test_add0("Value longer, braces, data before");
-  mytest("toto ${t}", "t=tututu", "toto tututu");
-  xbt_test_add0("Value longer, no braces, data before and after");
-  mytest("toto $t tata", "t=tututu", "toto tututu tata");
-  xbt_test_add0("Value longer, braces, data before and after");
-  mytest("toto ${t} tata", "t=tututu", "toto tututu tata");
-
-  xbt_test_add0("Value much longer, no braces, only variable");
-  mytest("$t", "t=" force_resize, force_resize);
-  xbt_test_add0("Value much longer, no braces, data after");
-  mytest("$t toto", "t=" force_resize, force_resize " toto");
-  xbt_test_add0("Value much longer, braces, data after");
-  mytest("${t} toto", "t=" force_resize, force_resize " toto");
-  xbt_test_add0("Value much longer, no braces, data before");
-  mytest("toto $t", "t=" force_resize, "toto " force_resize);
-  xbt_test_add0("Value much longer, braces, data before");
-  mytest("toto ${t}", "t=" force_resize, "toto " force_resize);
-  xbt_test_add0("Value much longer, no braces, data before and after");
-  mytest("toto $t tata", "t=" force_resize, "toto " force_resize " tata");
-  xbt_test_add0("Value much longer, braces, data before and after");
-  mytest("toto ${t} tata", "t=" force_resize, "toto " force_resize " tata");
-
-  xbt_test_add0("Escaped $");
-  mytest("\\$tutu", "tutu=t", "\\$tutu");
-  xbt_test_add0("Space in var name (with braces)");
-  mytest("${tu ti}", "tu_ti=t", "t");
-
-  xbt_test_add0("Two variables");
-  mytest("$toto $tutu", "toto=1 tutu=2", "1 2");
-
-  // Commented: I'm too lazy to do a memmove in var name to remove the backslash after use.
-  // Users should use braces.
-  //  xbt_test_add0("Escaped space in var name", "$tu\\ ti", "tu_ti=t", "t");
-
-  xbt_test_add0("Default value");
-  mytest("${t:-toto}", "", "toto");
-  xbt_test_add0("Useless default value (variable already defined)");
-  mytest("${t:-toto}", "t=TRUC", "TRUC");
-
+  va_list ap;
+  va_start(ap, fmt);
+  char *data = bvprintf(fmt, ap);
+  xbt_strbuff_append(b, data);
+  xbt_free(data);
+  va_end(ap);
 }
-
-#endif /* SIMGRID_TEST */