From 96cf67bd29957cfde6c5f15cfec7e370c6dbabe2 Mon Sep 17 00:00:00 2001 From: Paul Smith Date: Fri, 17 May 2013 02:29:46 -0400 Subject: Update source file format: remove TABs, use GNU coding styles. --- expand.c | 244 +++++++++++++++++++++++++++++++-------------------------------- 1 file changed, 122 insertions(+), 122 deletions(-) (limited to 'expand.c') diff --git a/expand.c b/expand.c index 10ef7d8..4eabcc6 100644 --- a/expand.c +++ b/expand.c @@ -61,8 +61,8 @@ variable_buffer_output (char *ptr, const char *string, unsigned int length) { unsigned int offset = ptr - variable_buffer; variable_buffer_length = (newlen + 100 > 2 * variable_buffer_length - ? newlen + 100 - : 2 * variable_buffer_length); + ? newlen + 100 + : 2 * variable_buffer_length); variable_buffer = xrealloc (variable_buffer, variable_buffer_length); ptr = variable_buffer + offset; } @@ -200,7 +200,7 @@ variable_expand_string (char *line, const char *string, long length) unsigned int line_offset; if (!line) - line = initialize_variable_output(); + line = initialize_variable_output (); o = line; line_offset = line - variable_buffer; @@ -220,118 +220,118 @@ variable_expand_string (char *line, const char *string, long length) { /* Copy all following uninteresting chars all at once to the variable output buffer, and skip them. Uninteresting chars end - at the next $ or the end of the input. */ + at the next $ or the end of the input. */ p1 = strchr (p, '$'); o = variable_buffer_output (o, p, p1 != 0 ? (unsigned int)(p1 - p) : strlen (p) + 1); if (p1 == 0) - break; + break; p = p1 + 1; /* Dispatch on the char that follows the $. */ switch (*p) - { - case '$': - /* $$ seen means output one $ to the variable output buffer. */ - o = variable_buffer_output (o, p, 1); - break; - - case '(': - case '{': - /* $(...) or ${...} is the general case of substitution. */ - { - char openparen = *p; - char closeparen = (openparen == '(') ? ')' : '}'; + { + case '$': + /* $$ seen means output one $ to the variable output buffer. */ + o = variable_buffer_output (o, p, 1); + break; + + case '(': + case '{': + /* $(...) or ${...} is the general case of substitution. */ + { + char openparen = *p; + char closeparen = (openparen == '(') ? ')' : '}'; const char *begp; - const char *beg = p + 1; - char *op; + const char *beg = p + 1; + char *op; char *abeg = NULL; - const char *end, *colon; - - op = o; - begp = p; - if (handle_function (&op, &begp)) - { - o = op; - p = begp; - break; - } - - /* Is there a variable reference inside the parens or braces? - If so, expand it before expanding the entire reference. */ - - end = strchr (beg, closeparen); - if (end == 0) + const char *end, *colon; + + op = o; + begp = p; + if (handle_function (&op, &begp)) + { + o = op; + p = begp; + break; + } + + /* Is there a variable reference inside the parens or braces? + If so, expand it before expanding the entire reference. */ + + end = strchr (beg, closeparen); + if (end == 0) /* Unterminated variable reference. */ fatal (*expanding_var, _("unterminated variable reference")); - p1 = lindex (beg, end, '$'); - if (p1 != 0) - { - /* BEG now points past the opening paren or brace. - Count parens or braces until it is matched. */ - int count = 0; - for (p = beg; *p != '\0'; ++p) - { - if (*p == openparen) - ++count; - else if (*p == closeparen && --count < 0) - break; - } - /* If COUNT is >= 0, there were unmatched opening parens - or braces, so we go to the simple case of a variable name - such as '$($(a)'. */ - if (count < 0) - { - abeg = expand_argument (beg, p); /* Expand the name. */ - beg = abeg; - end = strchr (beg, '\0'); - } - } - else - /* Advance P to the end of this reference. After we are + p1 = lindex (beg, end, '$'); + if (p1 != 0) + { + /* BEG now points past the opening paren or brace. + Count parens or braces until it is matched. */ + int count = 0; + for (p = beg; *p != '\0'; ++p) + { + if (*p == openparen) + ++count; + else if (*p == closeparen && --count < 0) + break; + } + /* If COUNT is >= 0, there were unmatched opening parens + or braces, so we go to the simple case of a variable name + such as '$($(a)'. */ + if (count < 0) + { + abeg = expand_argument (beg, p); /* Expand the name. */ + beg = abeg; + end = strchr (beg, '\0'); + } + } + else + /* Advance P to the end of this reference. After we are finished expanding this one, P will be incremented to continue the scan. */ - p = end; - - /* This is not a reference to a built-in function and - any variable references inside are now expanded. - Is the resultant text a substitution reference? */ - - colon = lindex (beg, end, ':'); - if (colon) - { - /* This looks like a substitution reference: $(FOO:A=B). */ - const char *subst_beg, *subst_end, *replace_beg, *replace_end; - - subst_beg = colon + 1; - subst_end = lindex (subst_beg, end, '='); - if (subst_end == 0) - /* There is no = in sight. Punt on the substitution - reference and treat this as a variable name containing - a colon, in the code below. */ - colon = 0; - else - { - replace_beg = subst_end + 1; - replace_end = end; - - /* Extract the variable name before the colon - and look up that variable. */ - v = lookup_variable (beg, colon - beg); - if (v == 0) - warn_undefined (beg, colon - beg); + p = end; + + /* This is not a reference to a built-in function and + any variable references inside are now expanded. + Is the resultant text a substitution reference? */ + + colon = lindex (beg, end, ':'); + if (colon) + { + /* This looks like a substitution reference: $(FOO:A=B). */ + const char *subst_beg, *subst_end, *replace_beg, *replace_end; + + subst_beg = colon + 1; + subst_end = lindex (subst_beg, end, '='); + if (subst_end == 0) + /* There is no = in sight. Punt on the substitution + reference and treat this as a variable name containing + a colon, in the code below. */ + colon = 0; + else + { + replace_beg = subst_end + 1; + replace_end = end; + + /* Extract the variable name before the colon + and look up that variable. */ + v = lookup_variable (beg, colon - beg); + if (v == 0) + warn_undefined (beg, colon - beg); /* If the variable is not empty, perform the substitution. */ - if (v != 0 && *v->value != '\0') - { - char *pattern, *replace, *ppercent, *rpercent; - char *value = (v->recursive + if (v != 0 && *v->value != '\0') + { + char *pattern, *replace, *ppercent, *rpercent; + char *value = (v->recursive ? recursively_expand (v) - : v->value); + : v->value); /* Copy the pattern and the replacement. Add in an extra % at the beginning to use in case there @@ -349,15 +349,15 @@ variable_expand_string (char *line, const char *string, long length) /* Look for %. Set the percent pointers properly based on whether we find one or not. */ - ppercent = find_percent (pattern); - if (ppercent) + ppercent = find_percent (pattern); + if (ppercent) { ++ppercent; rpercent = find_percent (replace); if (rpercent) ++rpercent; } - else + else { ppercent = pattern; rpercent = replace; @@ -368,38 +368,38 @@ variable_expand_string (char *line, const char *string, long length) o = patsubst_expand_pat (o, value, pattern, replace, ppercent, rpercent); - if (v->recursive) - free (value); - } - } - } + if (v->recursive) + free (value); + } + } + } - if (colon == 0) - /* This is an ordinary variable reference. - Look up the value of the variable. */ - o = reference_variable (o, beg, end - beg); + if (colon == 0) + /* This is an ordinary variable reference. + Look up the value of the variable. */ + o = reference_variable (o, beg, end - beg); - if (abeg) - free (abeg); - } - break; + if (abeg) + free (abeg); + } + break; - case '\0': - break; + case '\0': + break; - default: - if (isblank ((unsigned char)p[-1])) - break; + default: + if (isblank ((unsigned char)p[-1])) + break; - /* A $ followed by a random char is a variable reference: - $a is equivalent to $(a). */ + /* A $ followed by a random char is a variable reference: + $a is equivalent to $(a). */ o = reference_variable (o, p, 1); - break; - } + break; + } if (*p == '\0') - break; + break; ++p; } @@ -418,7 +418,7 @@ variable_expand_string (char *line, const char *string, long length) char * variable_expand (const char *line) { - return variable_expand_string(NULL, line, (long)-1); + return variable_expand_string (NULL, line, (long)-1); } /* Expand an argument for an expansion function. @@ -434,7 +434,7 @@ expand_argument (const char *str, const char *end) char *r; if (str == end) - return xstrdup(""); + return xstrdup (""); if (!end || *end == '\0') return allocated_variable_expand (str); -- cgit v1.2.3