1 files changed, 335 insertions, 0 deletions
diff --git a/php_count.c b/php_count.c
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index 0000000..ee7ce10
--- /dev/null
+++ b/php_count.c
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+/* php_count: given a list of C/C++/Java files on the command line,
+   count the SLOC in each one.  SLOC = physical, non-comment lines.
+   This program knows about C++ and C comments (and how they interact),
+   and correctly ignores comment markers inside strings.
+
+This is part of SLOCCount, a toolsuite that counts source lines of code (SLOC).
+Copyright (C) 2001-2004 David A. Wheeler.
+
+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.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+To contact David A. Wheeler, see his website at:
+ http://www.dwheeler.com.
+
+
+   Usage: Use in one of the following ways:
+     php_count                      # As filter
+     php_count list_of_files        # Counts for each file.
+     php_count -f fl                # Counts the files listed in "fl".
+
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+
+/* If ALLOW_SHORT_TAGS is true, then <? all by itself begins PHP code. */
+#define ALLOW_SHORT_TAGS 1
+
+/* If ALLOW_ASP_TAGS is true, then <% begins PHP code. */
+#define ALLOW_ASP_TAGS 1
+
+
+
+/* Modes: PHP starts in "NONE", and <?php etc change mode to "NORMAL". */
+enum mode_t { NONE, NORMAL, INSTRING, INCOMMENT, INSINGLESTRING, HEREDOC };
+
+enum comment_t {ANSIC_STYLE, CPP_STYLE, SH_STYLE}; /* Types of comments */
+enum end_t {NORMAL_END, SCRIPT_END, ASP_END}; /* Type of ending to expect. */
+
+
+/* Globals */
+long total_sloc;
+
+long line_number;
+
+/* Handle input */
+
+/* Number of characters in one line, maximum. */
+/* The code uses fgets() so that longer lines are truncated & not a
+   buffer overflow hazard. */
+#define LONGEST_LINE 20000
+
+static char current_line[LONGEST_LINE];
+static char *clocation; /* points into current_line */
+static long sloc = 0;
+static int sawchar = 0; /* Did you see a character on this line? */
+static int beginning_of_line = 0;
+static int is_input_eof;
+
+void read_input_line(FILE *stream) {
+ /* Read in a new line - increment sloc if sawchar, & reset sawchar. */
+ if (feof(stream)) {
+   is_input_eof = 1;
+   return;
+ }
+ line_number++;
+ fgets(current_line, sizeof(current_line)-2, stream);
+ clocation = &(current_line[0]);
+ beginning_of_line = 1;
+ if (current_line[0] == '\0') is_input_eof = 1;
+ if (sawchar) {
+   /* printf("DEBUG: INCREMENTING SLOC\n"); */
+   sawchar = 0;
+   sloc++;
+ }
+}
+
+void init_input(FILE *stream) {
+ current_line[0] = '\0';
+ is_input_eof = 0;
+ sawchar = 0;
+ read_input_line(stream);
+}
+
+void consume_char(FILE *stream) {
+ /* returns TRUE if there are more characters in the input. */
+ beginning_of_line = 0;
+ if (!*clocation) read_input_line(stream);
+ else             clocation++;
+}
+
+int match_consume(const char *m, FILE *stream) {
+ /* returns TRUE & most forward if matches, and consumes */
+ if (!*clocation) read_input_line(stream);
+ if (strncasecmp(m, clocation, strlen(m)) == 0) {
+   /* printf("MATCH: %s, %s\n", m, clocation); */
+   clocation += strlen(m);
+   beginning_of_line = 0;
+   return 1;
+ } else {
+   return 0;
+ }
+}
+
+int current_char(FILE *stream) {
+ if (!*clocation) read_input_line(stream);
+ return *clocation;
+}
+
+char *rest_of_line(FILE *stream) {
+ /* returns rest of the line in a malloc'ed entry (caller must free()),
+    consuming it. */
+ char *result;
+
+ result = strdup(clocation);
+ read_input_line(stream);
+ return result;
+}
+
+
+void strstrip(char *s) {
+ /* Strip whitespace off the end of s. */
+ char *p;
+ 
+ /* Remove whitespace from the end by walking backwards. */
+ for (p= s + strlen(s) - 1; p >= s && isspace(*p); p--) {
+   *p = '\0';
+ }
+ return;
+}
+
+
+long sloc_count(char *filename, FILE *stream) {
+ /* Count the sloc in the program in stdin. */
+
+ enum mode_t mode = NONE;   /* State machine state - NORMAL == PHP code */
+ enum comment_t comment_type;   /* ANSIC_STYLE, CPP_STYLE, SH_STYLE */
+ enum end_t expected_end;   /* The kind of ending expected, e.g. ?> */
+
+ char *heredoc_end;
+
+ sloc = 0;
+ 
+
+ /* The following implements a state machine with transitions; the
+    main state is "mode"; the transitions are triggered by character input. */
+
+ while (!is_input_eof) {
+    /* printf("mode=%d, current_char=%c\n", mode, current_char()); */
+    if (mode == NONE) {
+       /* Note: PHP will raise errors if something starts with
+          <?php and isn't followed by whitespace, e.g., <?phphello
+          is illegal.  We won't look for this case, under the assumption
+          that someone won't bother to count malformed code.  It's just
+          as well, anyway - it's few would think of doing it!
+          Note that simple <? followed by arbitrary characters is okay,
+          and is handled by the <? processing, so <?echo("hello")?> works. */
+       if (match_consume("<?php", stream)) {
+               expected_end = NORMAL_END;
+               mode = NORMAL;
+       } else if (ALLOW_SHORT_TAGS && match_consume("<?", stream)) {
+               expected_end = NORMAL_END;
+               mode = NORMAL;
+       /* FIXME: <script...> should be more flexible, allowing for
+          other attributes etc. I haven't seen this as a real problem. */
+       } else if (match_consume("<script language=\"php\">", stream)) {
+               expected_end = SCRIPT_END;
+               mode = NORMAL;
+       } else if (ALLOW_ASP_TAGS && match_consume("<%", stream)) {
+               expected_end = ASP_END;
+               mode = NORMAL;
+       } else consume_char(stream);
+    } else if (mode == NORMAL) {
+       if ((expected_end==NORMAL_END) && match_consume("?>", stream)) {
+           mode = NONE;
+       } else if ((expected_end==ASP_END) && match_consume("%>", stream)) {
+           mode = NONE;
+       } else if ((expected_end==SCRIPT_END) && match_consume("</script>", stream)) {
+           mode = NONE;
+       } else if (match_consume("\"", stream)) {
+           sawchar = 1;
+           mode = INSTRING;
+       } else if (match_consume("\'", stream)) {
+           sawchar = 1;
+           mode = INSINGLESTRING;
+       } else if (match_consume("/*", stream)) {
+          mode = INCOMMENT;
+          comment_type = ANSIC_STYLE;
+       } else if (match_consume("//", stream)) {
+          mode = INCOMMENT;
+          comment_type = CPP_STYLE;
+       } else if (match_consume("#", stream)) {
+          mode = INCOMMENT;
+          comment_type = SH_STYLE;
+       } else if (match_consume("<<<", stream)) {
+          mode = HEREDOC;
+          while (isspace(current_char(stream)) && !is_input_eof) {consume_char(stream);}
+          heredoc_end = rest_of_line(stream);
+          strstrip(heredoc_end);
+       } else {
+         if (!isspace(current_char(stream))) sawchar = 1;
+         consume_char(stream);
+       }
+    } else if (mode == INSTRING) {
+      /* We only count string lines with non-whitespace -- this is to
+         gracefully handle syntactically invalid programs.
+         You could argue that multiline strings with whitespace are
+         still executable and should be counted. */
+      if (!isspace(current_char(stream))) sawchar = 1;
+      if (match_consume("\"", stream)) {mode = NORMAL;}
+      else if (match_consume("\\\"", stream) || match_consume("\\\\", stream) ||
+               match_consume("\\\'", stream)) {}
+      else consume_char(stream);
+    } else if (mode == INSINGLESTRING) {
+      /* We only count string lines with non-whitespace; see above. */
+      if (!isspace(current_char(stream))) sawchar = 1;
+      if (current_char(stream) == '\'') {}
+      if (match_consume("'", stream)) {mode = NORMAL; }
+      else if (match_consume("\\\\", stream) || match_consume("\\\'", stream)) { }
+      else { consume_char(stream); }
+    } else if (mode == INCOMMENT) {
+      if ((comment_type == ANSIC_STYLE) && match_consume("*/", stream)) {
+          mode = NORMAL; }
+      /* Note: in PHP, must accept ending markers, even in a comment: */
+      else if ((expected_end==NORMAL_END) && match_consume("?>", stream))
+          { mode = NONE; }
+      else if ((expected_end==ASP_END) && match_consume("%>", stream)) { mode = NONE; }
+      else if ((expected_end==SCRIPT_END) && match_consume("</script>", stream))
+                                     { mode = NONE; }
+      else if ( ((comment_type == CPP_STYLE) || (comment_type == SH_STYLE)) &&
+           match_consume("\n", stream)) { mode = NORMAL; }
+      else consume_char(stream);
+    } else if (mode == HEREDOC) {
+      if (!isspace(current_char(stream))) sawchar = 1;
+      if (beginning_of_line && match_consume(heredoc_end, stream)) {
+        mode=NORMAL;
+      } else {
+        consume_char(stream);
+      }
+    } else {
+       fprintf(stderr, "Warning! Unknown mode in PHP file %s, mode=%d\n",
+               filename, mode);
+       consume_char(stream);
+    }
+ }
+ if (mode != NONE) {
+   fprintf(stderr, "Warning! Unclosed PHP file %s, mode=%d\n", filename, mode);
+ }
+
+ return sloc;
+}
+
+
+void count_file(char *filename) {
+  long sloc;
+  FILE *stream;
+
+  stream = fopen(filename, "r");
+  line_number = 0;
+  init_input(stream);
+  sloc = sloc_count(filename, stream);
+  fclose (stream);
+  total_sloc += sloc;
+  printf("%ld %s\n", sloc, filename);
+}
+
+char *read_a_line(FILE *file) {
+ /* Read a line in, and return a malloc'ed buffer with the line contents.
+    Any newline at the end is stripped.
+    If there's nothing left to read, returns NULL. */
+
+ /* We'll create a monstrously long buffer to make life easy for us: */
+ char buffer[10000];
+ char *returnval;
+ char *newlinepos;
+
+ returnval = fgets(buffer, sizeof(buffer), file);
+ if (returnval) {
+   newlinepos = buffer + strlen(buffer) - 1;
+   if (*newlinepos == '\n') {*newlinepos = '\0';};
+   return strdup(buffer);
+ } else {
+   return NULL;
+ }
+}
+
+
+int main(int argc, char *argv[]) {
+ long sloc;
+ int i;
+ FILE *file_list;
+ char *s;
+
+ total_sloc = 0;
+ line_number = 0;
+
+ if (argc <= 1) {
+   init_input(stdin);
+   sloc = sloc_count("-", stdin);
+   printf("%ld %s\n", sloc, "-");
+   total_sloc += sloc;
+ } else if ((argc == 3) && (!strcmp(argv[1], "-f"))) {
+   if (!strcmp (argv[2], "-")) {
+     file_list = stdin;
+   } else {
+     file_list = fopen(argv[2], "r");
+   }
+   if (file_list) {
+     while ((s = read_a_line(file_list))) {
+       count_file(s);
+       free(s);
+     }
+   }
+ } else {
+   for (i=1; i < argc; i++) { count_file(argv[i]); }
+ }
+ printf("Total:\n");
+ printf("%ld\n", total_sloc);
+ exit(0);
+}
+