* under the terms of the license (GNU LGPL) which comes with this package. */
#include "xbt/strbuff.h"
+#include <stdarg.h>
#define minimal_increment 512
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(strbuff, xbt, "String buffers");
-/**
-** Buffer code
-**/
-
-inline 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] = '\0';
}
+/** @brief Constructor */
xbt_strbuff_t xbt_strbuff_new(void)
{
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;
}
{
xbt_strbuff_t res = xbt_malloc(sizeof(s_xbt_strbuff_t));
res->data = xbt_strdup(ctn);
- res->used = res->size = strlen(ctn);
+ res->size = strlen(ctn);
+ res->used = res->size;
return res;
}
}
}
+/** @brief Adds some content at the end of the buffer */
void xbt_strbuff_append(xbt_strbuff_t b, const char *toadd)
{
int addlen;
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;
}
+/** @brief format some content and push it at the end of the buffer */
+void xbt_strbuff_printf(xbt_strbuff_t b, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ char *data = bvprintf(fmt, ap);
+ xbt_strbuff_append(b, data);
+ xbt_free(data);
+ va_end(ap);
+}
+
/** @brief Replaces a set of variables by their values
*
* @param b buffer to modify
*
* 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 '${var:-default}'. These two forms are equivalent, even if they
- * shouldn't to respect the shell standard (:= form should set the value in the dict,
- * but does not) (BUG).
+ * You can provide a default value to use if the variable is not set in the dict by using '${var:=default}' or
+ * '${var:-default}'. These two forms are equivalent, even if they shouldn't to respect the shell standard (:= form
+ * should set the value in the dict, but does not) (BUG).
*/
void xbt_strbuff_varsubst(xbt_strbuff_t b, xbt_dict_t patterns)
{
-
char *end; /* pointers around the parsed chunk */
- int in_simple_quote = 0, in_double_quote = 0;
+ int in_simple_quote = 0;
+ int in_double_quote = 0;
int done = 0;
if (b->data[0] == '\0')
end++;
xbt_assert(*end != '\0', "String ends with \\");
break;
-
case '\'':
if (!in_double_quote) {
/* simple quote not protected by double ones, note it */
in_double_quote = !in_double_quote;
}
break;
-
case '$':
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;
+ char *beg_var;
+ char *end_var; /* variable name boundary */
+ char *beg_subst = end;
+ char *end_subst = NULL; /* where value should be written to */
+ char *value;
+ char *default_value = NULL;
int val_len;
- beg_subst = end;
-
if (*(++end) == '{') {
/* the variable name is enclosed in braces. */
default_value[p - end_var - 2] = '\0';
end_subst = p + 1; /* eat '}' */
-
break;
}
end_var++;
end_subst = end_var + 1; /* also kill the } in the name */
xbt_assert(end_var != beg_var, "Variable name empty (${} is not valid)");
-
-
} else {
/* name given directly */
beg_var = end;
end_var = beg_var;
- while (*end_var != '\0' && *end_var != ' ' && *end_var != '\t'
- && *end_var != '\n')
+ while (*end_var != '\0' && *end_var != ' ' && *end_var != '\t' && *end_var != '\n')
end_var++;
end_subst = end_var;
xbt_assert (end_var != beg_var, "Variable name empty ($ is not valid)");
if (val_len <= end_subst - beg_subst) {
/* enough room to do the substitute in place */
memmove(beg_subst, value, val_len); /* substitute */
- memmove(beg_subst + val_len, end_subst, b->used - (end_subst - b->data) + 1); /* move the end of the string closer */
+ /* move the end of the string closer */
+ memmove(beg_subst + val_len, end_subst, b->used - (end_subst - b->data) + 1);
// XBT_DEBUG("String is now: '%s'",b->data);
end = beg_subst + val_len; /* update the currently explored char in the overall loop */
// XBT_DEBUG("end of substituted section is now '%s'",end);
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 */
-// XBT_DEBUG("Too short (by %d chars; %d chars left in area)",val_len- (end_subst-beg_subst), b->size - b->used);
+// XBT_DEBUG("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 */
+ /* We have to realloc the data area before (because b->size is too small).
+ * We have to update our pointers, too */
char *newdata = xbt_realloc(b->data, b->used + MAX(minimal_increment, tooshort));
int offset = newdata - b->data;
b->data = newdata;
beg_subst += offset;
end_subst += offset;
}
- memmove(beg_subst + val_len, end_subst, b->used - (end_subst - b->data) + 1); /* move the end of the string a bit further */
+ /* move the end of the string a bit further */
+ memmove(beg_subst + val_len, end_subst, b->used - (end_subst - b->data) + 1);
memmove(beg_subst, value, val_len); /* substitute */
b->used = newused;
// XBT_DEBUG("String is now: %s",b->data);
}
free(value);
-
free(default_value);
-
end--; /* compensate the next end++ */
}
break;
-
case '\0':
done = 1;
break;
#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 */
+/* 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........." \
"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)
+static void mytest(const char *input, const char *patterns, const char *expected)
{
xbt_dynar_t dyn_patterns; /* splited string */
xbt_dict_t p; /* patterns */
xbt_strbuff_append(sb, input);
xbt_strbuff_varsubst(sb, p);
xbt_dict_free(&p);
- xbt_test_assert(!strcmp(sb->data, expected),
- "Input (%s) with patterns (%s) leads to (%s) instead of (%s)",
+ xbt_test_assert(!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_add("Value much longer, no braces, data before and after");
mytest("toto $t tata", "t=" force_resize, "toto " force_resize " tata");
xbt_test_add("Value much longer, braces, data before and after");
- mytest("toto ${t} tata", "t=" force_resize,
- "toto " force_resize " tata");
+ mytest("toto ${t} tata", "t=" force_resize, "toto " force_resize " tata");
xbt_test_add("Escaped $");
mytest("\\$tutu", "tutu=t", "\\$tutu");
mytest("${t:-toto}", "", "toto");
xbt_test_add("Useless default value (variable already defined)");
mytest("${t:-toto}", "t=TRUC", "TRUC");
-
}
-
#endif /* SIMGRID_TEST */
