This script was created as an helps to recover the require dependencies inside vendor directory of project, if you lost the main composer.json

get_composer_deps.py

#!/bin/python
# -*- coding: utf-8 -*-

import json
import sys

# Constant vars
if len(sys.argv) != 2:
    print('Error!! -- No file specified ')
    print('\t get_composer_deps.py <path/to/vendor/composer/installed.json>')
    exit()

filename =''
try:
    filename = sys.argv[1]
    json_file= open(filename, 'r') 
except Exception as e:
    print(f"Error!! -- The file '{filename}' dont exist" )
    exit()

# get the data
json_load = json.load(json_file)

# interactive vars
direct_dependences_dict = {}
indirect_dependences_list = []


# This manage the indirect dependences and
# delete or add this from dictionary or list
def manage_indirect_deps( ind_deps_list :list) -> None:
    # traverse list of indirect dependences
    for inddep in ind_deps_list:
        if not(inddep in indirect_dependences_list):
            # delete 'direct' dependence calls from 'indirect' dependences 
            if inddep in direct_dependences_dict:
                del direct_dependences_dict[inddep]
            # add 'indirect' dependence to list
            indirect_dependences_list.append(inddep)


# traverse the data list
for obj in json_load:

    # get the dep data
    dep_name  = obj['name']
    dep_version = obj['version_normalized']
    dep_dev = (lambda x:  ((lambda y: y.get('dev-master') if y else None ) (x.get('branch-alias'))) if x else None ) ( obj.get('extra') )

    # verify direct dependeces
    if not (dep_name in indirect_dependences_list):
        direct_dependences_dict[dep_name] = (dep_version, dep_dev)

    # get indeirect dependecnes
    ind_deps_reqs = obj.get('require')
    ind_deps_reqs_dev = obj.get('require-dev')

    # manage indirect dependences
    manage_indirect_deps(ind_deps_reqs if ind_deps_reqs else [] )
    manage_indirect_deps(ind_deps_reqs_dev if ind_deps_reqs_dev else [])

# traverse the obtained direct dependencies
str_req = '"require": {'
str_req_dev = '"require-dev": {'
for dep in direct_dependences_dict:
    if direct_dependences_dict[dep][1]:
        str_req_dev += '\n    \"'+dep + '\": \"^' + direct_dependences_dict[dep][0] + '\"'
    else:
        str_req += '\n    \"'+dep + '\": \"^' + direct_dependences_dict[dep][0] + '\"'

str_req += '\n},'
str_req_dev += '\n}'

print(str_req)
print(str_req_dev)

get_composer_deps_colorfull.py

#!/bin/python
# -*- coding: utf-8 -*-
import json
import sys

from pygments import highlight
from pygments.formatters.terminal256 import Terminal256Formatter
from pygments.lexers.web import JsonLexer

# Constant vars
if len(sys.argv) != 2:
    print('Error!! -- No file specified ')
    print('\t get_composer_deps.py <path/to/vendor/composer/installed.json>')
    exit()

filename =''
try:
    filename = sys.argv[1]
    json_file= open(filename, 'r') 
except Exception as e:
    print(f"Error!! -- The file '{filename}' dont exist" )
    exit()

# get the data
json_load = json.load(json_file)

# interactive vars
direct_dependences_dict = {}
indirect_dependences_list = []


# This manage the indirect dependences and
# delete or add this from dictionary or list
def manage_indirect_deps( ind_deps_list :list) -> None:
    # traverse list of indirect dependences
    for inddep in ind_deps_list:
        if not(inddep in indirect_dependences_list):
            # delete 'direct' dependence calls from 'indirect' dependences 
            if inddep in direct_dependences_dict:
                del direct_dependences_dict[inddep]
            # add 'indirect' dependence to list
            indirect_dependences_list.append(inddep)


# traverse the data list
for obj in json_load:

    # get the dep data
    dep_name  = obj['name']
    dep_version = obj['version_normalized']
    dep_dev = (lambda x:  ((lambda y: y.get('dev-master') if y else None ) (x.get('branch-alias'))) if x else None ) ( obj.get('extra') )

    # verify direct dependeces
    if not (dep_name in indirect_dependences_list):
        direct_dependences_dict[dep_name] = (dep_version, dep_dev)

    # get indeirect dependecnes
    ind_deps_reqs = obj.get('require')
    ind_deps_reqs_dev = obj.get('require-dev')

    # manage indirect dependences
    manage_indirect_deps(ind_deps_reqs if ind_deps_reqs else [] )
    manage_indirect_deps(ind_deps_reqs_dev if ind_deps_reqs_dev else [])

# traverse the obtained direct dependencies
req_json_dic = {}
req_dev_json_dic = {}

for dep in direct_dependences_dict:
    if direct_dependences_dict[dep][1]:
        req_dev_json_dic[dep] = "^" + direct_dependences_dict[dep][0]
    else:
        req_json_dic[dep] = "^" + direct_dependences_dict[dep][0]

# get all deps
compser_json_dic = {"require": req_json_dic, "require-dev":req_dev_json_dic}

# Generate JSON
raw_json = json.dumps(compser_json_dic, indent=4)

# Colorize it
colorful = highlight(
    raw_json,
    lexer=JsonLexer(),
    formatter=Terminal256Formatter(),
)

# Print to console
print(colorful)

No problem