GIT

#ifndef VOLGIT_SYSTEM_PART_C #define VOLGIT_SYSTEM_PART_C VOLGIT_SYSTEM_PART_C #include const char *const default_header="GIT"; const char *const default_footer=""; struct Volgit_State state = { .input_path=NULL, .output_path=NULL, .header=default_header, .footer=default_footer, .output_dir_fd=-1, .tree_cutoff=NO_TREE_CUTOFF, .output_is_tree_like=0, }; const char *usage= "Options: \n" " --input \n" " --output \n" " --header \n" " --footer \n" " --tree \n" " Use 'tree' like output for directory index\n" " --tree-cutoff \n" " The tree output can get too bulky\n" " so you can set a depth at which the output\n" " is seperated into a different file\n" " -h --help\n" " Print this message\n"; static inline int get_next_option_or_die(int i,int argc,const char *error_message) { if(i+1>=argc) die(error_message); return i+1; } void parse_options(int argc,char **argv) { #define if_option(option) if(!strncmp(argv[i],option,sizeof(option))) int i; if(argc==1) die(usage); for(i=1;i=MAX_CUTOFF-1) die("cutoff number is too large. Max cutoff is %d\n",MAX_CUTOFF); }else if_option("-h") { die(usage); }else if_option("--help") { die(usage); }else { die("Invalid command argument '%s'. Try using -h\n",argv[i]); } } if(state.input_path==NULL) die("You need to specify an input path\n"); if(state.output_path==NULL) die("You need to specify an output path\n"); #undef if_option } char* read_file(const char *filename) { long file_size; int file; char *ret; struct stat file_stats; file=open(filename,O_RDONLY); if(file==-1) die("Could not open file %s\n",filename); fstat(file,&file_stats); ret=malloc(file_stats.st_size+1); if(ret==NULL) die("Ran out of memory!\n"); read(file,ret,file_stats.st_size); ret[file_stats.st_size]='\0'; close(file); return ret; } int create_branch_dir(const char *branch_name) { int ret=0; ret=openat(state.output_dir_fd,branch_name,O_DIRECTORY|O_RDONLY); if(ret==-1) { if(mkdirat(state.output_dir_fd,branch_name,0775)==-1) die("Could not create branch directory for %s\n",branch_name); ret=openat(state.output_dir_fd,branch_name,O_DIRECTORY|O_RDONLY); if(ret==-1) die("Could not open newly created directory for branch %s\n",branch_name); } return ret; } FILE* create_file(int branch_dir,const char *filename) { int fd; char *new_filename; size_t old_filename_len; FILE *ret; old_filename_len=strlen(filename); new_filename=calloc(old_filename_len+sizeof(".html"),1); if(new_filename==NULL) die("Ran out of memory!\n"); memcpy(new_filename,filename,old_filename_len); memcpy(new_filename+old_filename_len,".html",sizeof(".html")); unlinkat(branch_dir,new_filename,0); fd=openat(branch_dir,new_filename,O_CREAT|O_RDWR,0664); if(fd==-1) die("Could not open the file '%s' for one of the branches\n",filename); free(new_filename); ret=fdopen(fd,"w"); fprintf(ret,"%s",state.header); return ret; } void close_file(FILE *file) { fprintf(file,"%s",state.footer); fclose(file); } int create_dir(int base_dir,const char *dir_name) { int ret; ret=openat(base_dir,dir_name,O_DIRECTORY|O_RDONLY); if(ret!=-1) return ret; mkdirat(base_dir,dir_name,0775); ret=openat(base_dir,dir_name,O_DIRECTORY|O_RDONLY); if(ret==-1) die("Could not create the 'files' subdirectory of one of the branch dirs\n"); return ret; } void die(const char *format, ...) { va_list args; va_start(args,format); vfprintf(stderr,format,args); exit(1); } void push_html_link_for_blob(FILE *out,const char *filename,const char *oid) { fprintf(out,"%s",oid,filename); } void push_html_link_for_tree(FILE *out,const char *filename,const char *oid) { fprintf(out,"%s",oid,filename); } #endif