1 files changed, 123 insertions, 0 deletions
diff --git a/src/cli_parser.c b/src/cli_parser.c
new file mode 100644
index 0000000..bdca700
--- /dev/null
+++ b/src/cli_parser.c
@@ -0,0 +1,123 @@
+/*
+Copyright 2015 Ian Jauslin
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#include "cli_parser.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "definitions.cpp"
+#include "array.h"
+
+// read a config file and write the output to str_args
+int read_config_file(Str_Array* str_args, const char* file, int read_from_stdin){
+  FILE* infile;
+  char c;
+  Char_Array buffer;
+
+  // allocate memory
+  init_Str_Array(str_args, ARG_COUNT);
+  init_Char_Array(&buffer, STR_SIZE);
+
+  // read from file
+  if(read_from_stdin==0){
+    infile=fopen(file,"r");
+    if(infile==NULL){
+      fprintf(stderr,"error: can't open file %s\n",file);
+      exit(-1);
+    }
+  }
+  else{
+    infile=stdin;
+  }
+
+  while(1){
+    c=fgetc(infile);
+    // add to str_args
+    if(c=='&'){
+      str_array_append_noinit(buffer,str_args);
+      init_Char_Array(&buffer, STR_SIZE);
+    }
+    else if(c==EOF){
+      str_array_append_noinit(buffer,str_args);
+      break;
+    }
+    else{
+      char_array_append(c,&buffer);
+    }
+  }
+  fclose(infile);
+
+  return(0);
+}
+
+
+// get the title from a string argument
+int get_str_arg_title(Char_Array str_arg, Char_Array* out){
+  int j,k;
+
+  init_Char_Array(out,STR_SIZE);
+  
+  // find "#!" at beginning of line
+  for(j=0;j<str_arg.length-2;j++){
+    if(str_arg.str[j]=='#' && str_arg.str[j+1]=='!' && (j==0 || str_arg.str[j-1]=='\n')){
+      break;
+    }
+  }
+  // if no title then error
+  if(j>=str_arg.length-2){
+    fprintf(stderr, "error: an entry in the configuration file does not have a title (which should be preceeded by '#!' at the beginning of a line)\n");
+    exit(-1);
+  }
+
+  // get title until end of line
+  for(k=j+2;k<str_arg.length && str_arg.str[k]!='\n'; k++){
+    char_array_append(str_arg.str[k],out);
+  }
+
+  return(0);
+}
+
+// find a string argument with the specified title
+int find_str_arg(char* title, Str_Array str_args){
+  int i,k;
+  char* ptr;
+  Char_Array buffer;
+
+  for(i=0;i<str_args.length;i++){
+    get_str_arg_title(str_args.strs[i], &buffer);
+    // match title
+    for(k=0, ptr=title; k<buffer.length; k++, ptr++){
+      if(buffer.str[k]!=*ptr){
+	break;
+      }
+    }
+    // if match
+    if(k==buffer.length){
+      free_Char_Array(buffer);
+      break;
+    }
+
+    free_Char_Array(buffer);
+  }
+  // if found
+  if(i<str_args.length){
+    return(i);
+  }
+  else{
+    return(-1);
+  }
+}
+